{"title":"LPG Boilers \u0026 LPG Water Heaters","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eFor homes off the mains gas grid, our LPG boiler and water heater range from Ariston, Glow-Worm, and Vaillant delivers the same efficiency and reliability as natural gas systems, running instead on propane supplied via bottled gas or a bulk storage tank. All models here are factory-set or field-convertible for LPG operation — never attempt to run a natural gas appliance on LPG without the correct conversion kit, as this is a Gas Safe compliance issue as well as a safety one.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eHow it works:\u003c\/strong\u003e LPG (liquefied petroleum gas) is stored as a pressurised liquid in a cylinder or tank and vaporises into gas as it's drawn off, feeding the boiler's burner via a regulator that steps the pressure down to the appliance's working range. Combustion then heats water for central heating and\/or hot water exactly as a mains gas boiler would — the difference lies entirely in fuel supply and injector sizing, not in how the heat exchanger or flue operate.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eChoose from combi, system, and regular (heat-only) formats depending on your property's hot water demand and existing cylinder setup. LPG storage vessels must be sited in line with \u003cstrong\u003eBS 5482\u003c\/strong\u003e separation distances from doors, windows, and boundaries, and installation or conversion work must only be carried out by a \u003cstrong\u003eGas Safe registered engineer holding LPG (CoLGP1) qualification\u003c\/strong\u003e. For rural, off-grid, and holiday-let properties, our LPG range offers a straightforward like-for-like alternative to oil, without the tank-fouling or delivery scheduling oil systems require.\u003c\/p\u003e","products":[{"product_id":"vaillant-ecotec-plus-635-35kw-system-boiler","title":"Vaillant ecoTEC Plus 635 Gas System Boiler | 0010036014 | 35kW IoniDETECT","description":"\u003c!-- SEO Product Name: Vaillant ecoTEC Plus 635 Gas System Boiler | 0010036014 | 35kW IoniDETECT --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp style=\"margin: 0 0 16px 0; line-height: 1.6;\"\u003eThe \u003cstrong\u003eVaillant ecoTEC Plus 635 (MPN 0010036014)\u003c\/strong\u003e is a 35kW gas \u003cstrong\u003esystem boiler\u003c\/strong\u003e, the top output in Vaillant's current ecoTEC plus system range. It works with a sealed heating system and a separate hot water cylinder — typically unvented for mains-pressure hot water — making it well suited to \u003cstrong\u003emedium to large homes with multiple bathrooms and higher simultaneous hot water demand\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 20px 0; line-height: 1.6;\"\u003eBuilt around Vaillant's \u003cstrong style=\"color: #008377cf;\"\u003eIoniDETECT combustion monitoring technology\u003c\/strong\u003e, the 635 reaches a wide modulation range of up to \u003cstrong\u003e1:9\u003c\/strong\u003e for precise heating control and efficient part-load running. A \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e and enhanced LINbus pump technology deliver accurate flow rate and pressure control, while readiness for up to a 20% hydrogen blend future-proofs the installation.\u003c\/p\u003e\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e39.4kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eMax Water Generation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e1:9\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e40.5kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eBoiler Lift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e52 dB(A)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eSound Power\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e8m\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eMax Horizontal Flue\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Callouts --\u003e\n\u003cdiv style=\"background: #fff4f4; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003eGas Safe installation required.\u003c\/strong\u003e This is a mains gas appliance and must be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with Building Regulations Part L and current Gas Safety (Installation and Use) Regulations.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8ec; border-left: 4px solid #d4900a; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #d4900a;\"\u003eCylinder required, LPG not supported:\u003c\/strong\u003e This is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e requiring a separate hot water cylinder — it does not provide hot water on its own. Unlike most of the current ecoTEC plus range, the \u003cstrong\u003e635 is not LPG convertible\u003c\/strong\u003e, so it's suitable for mains gas installations only.\u003c\/div\u003e\n\u003c!-- Feature grid --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eIoniDETECT Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003e\n\u003cstrong\u003eIntelligent gas combustion monitoring\u003c\/strong\u003e helps the boiler reach a wide modulation range of up to 1:9 for precise, efficient heating control.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eEnhanced LINbus Pump Control\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eDelivers \u003cstrong\u003eaccurate flow rate and pressure differential readings\u003c\/strong\u003e via the internal pump for superior overall system control.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eSmart Home Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003ePairs with the \u003cstrong\u003emyVAILLANT connect internet gateway\u003c\/strong\u003e for app control, smart home integration and remote appliance support in minutes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eHydrogen Prepared\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eTested and validated to \u003cstrong\u003eoperate safely with up to a 20% hydrogen gas blend\u003c\/strong\u003e, future-proofing the installation against changes to the gas grid.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eGuided Commissioning Wizard\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eA \u003cstrong\u003esemi-touch interface with a step-by-step commissioning wizard\u003c\/strong\u003e simplifies first-time installation and setup for engineers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eLike-for-Like Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eRetains a \u003cstrong\u003efamiliar footprint with an intuitive interface\u003c\/strong\u003e and guided commissioning for a straightforward upgrade from earlier ecoTEC plus generations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Spec table --\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (50\/30°C, condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e5.0–37.7 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (80\/60°C, non-condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e4.5–34.9 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e1:9\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFlow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e30–85°C (factory setting 75°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eWater Generation\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMaximum Heat Output for Water Generation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e39.4 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003ePhysical \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e720 × 440 × 386 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eBoiler Lift Weight (dry)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e40.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eGas Inlet Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeating Flow \u0026amp; Return Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e22mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeat Exchanger Material\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eStainless steel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eEmissions \u0026amp; Noise\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNOx Emissions (EN 15502-2-1)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e27.0 mg\/kWh\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e94% (Heating: A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Sound Power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e52 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eFlueing \u0026amp; Clearances\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal \/ Vertical Flue (60\/100)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e8 m \/ 8 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal \/ Vertical Flue (80\/125)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e28 m \/ 30 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFront Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e500mm (can reduce to 5mm behind removable panel)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eTop \/ Bottom Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e165mm \/ 180mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eCompliance \u0026amp; Coverage\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eManufacturer Part Number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e0010036014\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eGTIN \/ EAN\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e4024074906750\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eLPG Convertible\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eNo\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"margin: 0 0 8px 0;\"\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWhat's the difference between a system boiler and a combi boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eA \u003cstrong\u003esystem boiler heats water and stores it in a separate cylinder\u003c\/strong\u003e, typically unvented for mains-pressure hot water, without needing a loft tank. A combi heats water directly on demand with no cylinder. System boilers suit homes wanting \u003cstrong\u003estrong, simultaneous hot water flow at multiple outlets\u003c\/strong\u003e without the loft tank a full open vent system requires.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eDo I need a cylinder to use this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eYes. This is a \u003cstrong\u003esystem boiler supplied without a cylinder\u003c\/strong\u003e — it must be connected to a compatible hot water cylinder, typically unvented, to provide domestic hot water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eCan this boiler run on LPG?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eNo. Unlike most of the current ecoTEC plus range, the \u003cstrong\u003eecoTEC plus 635 is not LPG convertible\u003c\/strong\u003e. It's suitable for mains natural gas installations only — for an LPG-capable option, consider a lower-output model in the current range.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWhat size property does the ecoTEC Plus 635 suit?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eAs the highest-output model in the current ecoTEC plus system range, with \u003cstrong\u003e39.4kW maximum water generation\u003c\/strong\u003e, the 635 suits medium to large homes with multiple bathrooms and higher simultaneous hot water demand.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWho can install this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eInstallation, commissioning and servicing must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with UK Gas Safety (Installation and Use) Regulations and Building Regulations Part L.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":62735042445661,"sku":"0010036014","price":2300.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/VaillantecoTECPlus832CombiBoiler.jpg?v=1764235167"},{"product_id":"vaillant-ecotec-plus-615-15kw-system-boiler","title":"Vaillant ecoTEC Plus 615 Gas System Boiler | 0010036010 | 15kW IoniDETECT","description":"\u003c!-- SEO Product Name: Vaillant ecoTEC Plus 615 Gas System Boiler | 0010036010 | 15kW IoniDETECT --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp style=\"margin: 0 0 16px 0; line-height: 1.6;\"\u003eThe \u003cstrong\u003eVaillant ecoTEC Plus 615 (MPN 0010036010)\u003c\/strong\u003e is a 15kW gas \u003cstrong\u003esystem boiler\u003c\/strong\u003e, designed to work with a sealed heating system and a separate unvented or vented hot water cylinder. It's a good fit for smaller properties that need the pressurised, no-loft-tank benefits of a system boiler without the higher output of the 625 or 635 variants.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 20px 0; line-height: 1.6;\"\u003eBuilt around Vaillant's \u003cstrong style=\"color: #008377cf;\"\u003eIoniDETECT combustion monitoring technology\u003c\/strong\u003e, the 615 reaches a modulation range of up to \u003cstrong\u003e1:8\u003c\/strong\u003e for closer matching to system demand. A \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e, semi-touch interface with guided commissioning, and readiness for up to a 20% hydrogen gas blend round out a boiler built for straightforward installation and long service life.\u003c\/p\u003e\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e19.6kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eMax Water Generation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e1:8\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e34kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eBoiler Lift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e42 dB(A)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eSound Power\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e16m\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eMax Horizontal Flue\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Callouts --\u003e\n\u003cdiv style=\"background: #fff4f4; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003eGas Safe installation required.\u003c\/strong\u003e This is a mains gas appliance and must be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with Building Regulations Part L and current Gas Safety (Installation and Use) Regulations.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8ec; border-left: 4px solid #d4900a; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #d4900a;\"\u003eCylinder required:\u003c\/strong\u003e This is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e — it must be installed with a separate hot water cylinder (typically an unvented cylinder for mains pressure hot water). It does not provide hot water on its own.\u003c\/div\u003e\n\u003c!-- Feature grid --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eIoniDETECT Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003e\n\u003cstrong\u003eIntelligent gas combustion monitoring\u003c\/strong\u003e helps the boiler reach a modulation range of up to 1:8 for closer matching to system demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eSmart Home Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003ePairs with the \u003cstrong\u003emyVAILLANT connect internet gateway\u003c\/strong\u003e for app control, smart home integration and remote appliance support in minutes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eAutomatic LPG Conversion\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eConversion to LPG is \u003cstrong\u003ecompleted in minutes via the interface during commissioning\u003c\/strong\u003e, with no additional parts required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eHydrogen Prepared\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eTested and validated to \u003cstrong\u003eoperate safely with up to a 20% hydrogen gas blend\u003c\/strong\u003e, future-proofing the installation against changes to the gas grid.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eGuided Commissioning Wizard\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eA \u003cstrong\u003esemi-touch interface with a step-by-step commissioning wizard\u003c\/strong\u003e simplifies first-time installation and setup for engineers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eLike-for-Like Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eRetains the \u003cstrong\u003esame case dimensions, footprint and pipe connections\u003c\/strong\u003e as previous ecoTEC plus generations for a straightforward swap.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Spec table --\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (50\/30°C, condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e2.8–15.9 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (80\/60°C, non-condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e2.5–14.8 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e1:8\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFlow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e30–85°C (factory setting 75°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eWater Generation\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMaximum Heat Output for Water Generation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e19.6 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003ePhysical \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e720 × 440 × 352 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eBoiler Lift Weight (dry)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e34 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eGas Inlet Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeating Flow \u0026amp; Return Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e22mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeat Exchanger Material\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eStainless steel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eEmissions \u0026amp; Noise\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNOx Emissions (EN 15502-2-1)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e36.0 mg\/kWh\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e93% (Heating: A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Sound Power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e42 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eFlueing \u0026amp; Clearances\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal \/ Vertical Flue (60\/100)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e16 m \/ 12 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal \/ Vertical Flue (80\/125)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e28 m \/ 30 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFront Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e500mm (can reduce to 5mm behind removable panel)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eTop \/ Bottom Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e165mm \/ 180mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eCompliance \u0026amp; Coverage\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eManufacturer Part Number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e0010036010\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eStandard warranty; extended terms available with Vaillant Advance registration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"margin: 0 0 8px 0;\"\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWhat's the difference between a system boiler and a combi boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eA \u003cstrong\u003esystem boiler heats water and stores it in a separate cylinder\u003c\/strong\u003e, typically unvented for mains-pressure hot water, without needing a loft tank. A combi heats water directly on demand with no cylinder. System boilers suit homes wanting \u003cstrong\u003estrong, simultaneous hot water flow at multiple outlets\u003c\/strong\u003e without the loft tank a full open vent system requires.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eDo I need a cylinder to use this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eYes. This is a \u003cstrong\u003esystem boiler supplied without a cylinder\u003c\/strong\u003e — it must be connected to a compatible hot water cylinder, typically unvented, to provide domestic hot water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eCan this boiler be converted to run on LPG?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eYes. The ecoTEC plus 615 supports \u003cstrong\u003eautomatic LPG conversion\u003c\/strong\u003e, completed in minutes via the interface at commissioning stage with no additional parts required, thanks to IoniDETECT technology continuously adapting to the gas type.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWhat size property does the ecoTEC Plus 615 suit?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eWith a \u003cstrong\u003e19.6kW maximum water generation output\u003c\/strong\u003e, the 615 suits smaller properties. Homes needing higher hot water capacity for multiple bathrooms may be better served by the \u003cstrong\u003e25kW ecoTEC plus 625 or 35kW ecoTEC plus 635\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWho can install this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eInstallation, commissioning and servicing must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with UK Gas Safety (Installation and Use) Regulations and Building Regulations Part L.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":62735050146141,"sku":"0010036010","price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/VaillantecoTECPlus832CombiBoiler.jpg?v=1764235167"},{"product_id":"vaillant-ecotec-plus-625-25kw-system-boiler","title":"Vaillant ecoTEC Plus 625 Gas System Boiler | 0010036012 | 25kW IoniDETECT","description":"\u003c!-- SEO Product Name: Vaillant ecoTEC Plus 625 Gas System Boiler | 0010036012 | 25kW IoniDETECT --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp style=\"margin: 0 0 16px 0; line-height: 1.6;\"\u003eThe \u003cstrong\u003eVaillant ecoTEC Plus 625 (MPN 0010036012)\u003c\/strong\u003e is a 25kW gas \u003cstrong\u003esystem boiler\u003c\/strong\u003e, designed to work with a sealed heating system and a separate hot water cylinder — typically unvented for strong mains-pressure hot water without a loft tank. It sits in the middle of the current ecoTEC plus system range, suited to homes needing solid, simultaneous hot water performance across more than one bathroom.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 20px 0; line-height: 1.6;\"\u003eBuilt around Vaillant's \u003cstrong style=\"color: #008377cf;\"\u003eIoniDETECT combustion monitoring technology\u003c\/strong\u003e, the 625 reaches a modulation range of up to \u003cstrong\u003e1:8\u003c\/strong\u003e for closer matching to system demand. A \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e, semi-touch interface with guided commissioning, and readiness for up to a 20% hydrogen gas blend round out a boiler built for reliability and straightforward installation.\u003c\/p\u003e\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e29.6kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eMax Water Generation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e1:8\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e36kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eBoiler Lift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e46 dB(A)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eSound Power\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e8m\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eMax Horizontal Flue\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Callouts --\u003e\n\u003cdiv style=\"background: #fff4f4; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003eGas Safe installation required.\u003c\/strong\u003e This is a mains gas appliance and must be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with Building Regulations Part L and current Gas Safety (Installation and Use) Regulations.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8ec; border-left: 4px solid #d4900a; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #d4900a;\"\u003eCylinder required:\u003c\/strong\u003e This is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e — it must be installed with a separate hot water cylinder (typically an unvented cylinder for mains pressure hot water). It does not provide hot water on its own.\u003c\/div\u003e\n\u003c!-- Feature grid --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eIoniDETECT Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003e\n\u003cstrong\u003eIntelligent gas combustion monitoring\u003c\/strong\u003e helps the boiler reach a modulation range of up to 1:8 for closer matching to system demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eSmart Home Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003ePairs with the \u003cstrong\u003emyVAILLANT connect internet gateway\u003c\/strong\u003e for app control, smart home integration and remote appliance support in minutes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eAutomatic LPG Conversion\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eConversion to LPG is \u003cstrong\u003ecompleted in minutes via the interface during commissioning\u003c\/strong\u003e, with no additional parts required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eHydrogen Prepared\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eTested and validated to \u003cstrong\u003eoperate safely with up to a 20% hydrogen gas blend\u003c\/strong\u003e, future-proofing the installation against changes to the gas grid.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eGuided Commissioning Wizard\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eA \u003cstrong\u003esemi-touch interface with a step-by-step commissioning wizard\u003c\/strong\u003e simplifies first-time installation and setup for engineers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eLike-for-Like Replacement\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eRetains the \u003cstrong\u003esame case dimensions, footprint and pipe connections\u003c\/strong\u003e as previous ecoTEC plus generations for a straightforward swap.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Spec table --\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (50\/30°C, condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e3.9–26.5 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (80\/60°C, non-condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e3.5–24.9 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e1:8\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFlow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e30–85°C (factory setting 75°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eWater Generation\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMaximum Heat Output for Water Generation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e29.6 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003ePhysical \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e720 × 440 × 352 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eBoiler Lift Weight (dry)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e36 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eGas Inlet Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeating Flow \u0026amp; Return Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e22mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeat Exchanger Material\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eStainless steel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eEmissions \u0026amp; Noise\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNOx Emissions (EN 15502-2-1)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e27.0 mg\/kWh\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e94% (Heating: A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Sound Power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e46 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eFlueing \u0026amp; Clearances\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal \/ Vertical Flue (60\/100)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e8 m \/ 8 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal \/ Vertical Flue (80\/125)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e28 m \/ 30 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFront Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e500mm (can reduce to 5mm behind removable panel)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eTop \/ Bottom Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e165mm \/ 180mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eCompliance \u0026amp; Coverage\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eManufacturer Part Number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e0010036012\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eStandard warranty; extended terms available with Vaillant Advance registration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"margin: 0 0 8px 0;\"\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWhat's the difference between a system boiler and a combi boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eA \u003cstrong\u003esystem boiler heats water and stores it in a separate cylinder\u003c\/strong\u003e, typically unvented for mains-pressure hot water, without needing a loft tank. A combi heats water directly on demand with no cylinder. System boilers suit homes wanting \u003cstrong\u003estrong, simultaneous hot water flow at multiple outlets\u003c\/strong\u003e without the loft tank a full open vent system requires.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eDo I need a cylinder to use this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eYes. This is a \u003cstrong\u003esystem boiler supplied without a cylinder\u003c\/strong\u003e — it must be connected to a compatible hot water cylinder, typically unvented, to provide domestic hot water.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eCan this boiler be converted to run on LPG?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eYes. The ecoTEC plus 625 supports \u003cstrong\u003eautomatic LPG conversion\u003c\/strong\u003e, completed in minutes via the interface at commissioning stage with no additional parts required, thanks to IoniDETECT technology continuously adapting to the gas type.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWhat size property does the ecoTEC Plus 625 suit?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eWith a \u003cstrong\u003e29.6kW maximum water generation output\u003c\/strong\u003e, the 625 suits homes with a good-sized cylinder and demand across two or more bathrooms. Smaller properties may be better matched to the \u003cstrong\u003e15kW ecoTEC plus 615\u003c\/strong\u003e, while larger homes may need the \u003cstrong\u003e35kW ecoTEC plus 635\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWho can install this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eInstallation, commissioning and servicing must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with UK Gas Safety (Installation and Use) Regulations and Building Regulations Part L.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":62735056011613,"sku":"0010036012","price":1925.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/VaillantecoTECPlus832CombiBoiler.jpg?v=1764235167"},{"product_id":"ariston-e-combi-one-24kw-boiler-including-horizontal-flue-kit","title":"Ariston E-Combi ONE 24kW Condensing Combi Gas Boiler with Horizontal Flue Kit - ErP A Rated, Xtratech Heat Exchanger, 5-Year Warranty","description":"\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: transparent; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eAriston E-Combi ONE 24kW condensing combi boiler\u003c\/strong\u003e is a compact, ErP A-rated gas boiler designed for UK homes with a single bathroom or moderate hot water demand. At the heart of the gas boiler is Ariston’s patented \u003cstrong\u003eXtratech™ stainless steel heat exchanger\u003c\/strong\u003e with \u003cstrong\u003e142% wider waterways\u003c\/strong\u003e for superior condensing efficiency and reduced blockage risk. The unique \u003cstrong\u003eAUTO function\u003c\/strong\u003e continuously optimises boiler output to match real-time heating demand, reducing short-cycling and improving seasonal efficiency. Compact at \u003cstrong\u003e735 × 400 × 299 mm\u003c\/strong\u003e and weighing just \u003cstrong\u003e29.3 kg\u003c\/strong\u003e, it fits most standard boiler locations. Delivers up to \u003cstrong\u003e10.4 L\/min of domestic hot water\u003c\/strong\u003e on demand. Supplied with \u003cstrong\u003estandard horizontal flue kit\u003c\/strong\u003e and \u003cstrong\u003eLPG conversion kit\u003c\/strong\u003e. Endorsed by the \u003cstrong\u003eEnergy Saving Trust\u003c\/strong\u003e. \u003cstrong\u003e2-year warranty, extendable to 5 years\u003c\/strong\u003e on registration.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eOutput\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10.4 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHot Water\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eErP A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRated\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e29.3 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e5-yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eLPG Kit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Gas Safe Installation Required:\u003c\/strong\u003e This boiler must be installed by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. The installer must commission the boiler and complete the benchmark checklist. Annual service by a Gas Safe engineer is required to maintain the extended warranty.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eXtratech™ Stainless Steel Heat Exchanger — 142% Wider Waterways\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe heart of the E-Combi ONE is Ariston’s patented \u003cstrong\u003eXtratech™ single-coil stainless steel heat exchanger\u003c\/strong\u003e, designed with \u003cstrong\u003e142% wider waterways\u003c\/strong\u003e than previous generations. Wider channels reduce pressure drops, lower the risk of blockages from system debris, and provide a larger condensing surface for improved heat transfer. Stainless steel construction resists corrosion across a wide pH range, making the exchanger compatible with most system water conditions. It is easy to remove for cleaning or inspection. Tested and certified by \u003cstrong\u003eTUV Rheinland\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003eXtratech™ single coil142% wider waterwaysTUV Rheinland certified\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eErP A Rated — Energy Saving Trust Endorsed\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE holds an \u003cstrong\u003eErP A energy efficiency rating\u003c\/strong\u003e for seasonal space heating and is endorsed by the \u003cstrong\u003eEnergy Saving Trust\u003c\/strong\u003e — one of a small number of gas boilers on the market to achieve both. At 30% load (low-temperature return mode), efficiency reaches approximately \u003cstrong\u003e99%\u003c\/strong\u003e, meaning the boiler extracts almost all available energy from the gas during normal heating operation.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003eErP A ratedEnergy Saving Trust endorsed~99% efficiency at part load\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eAUTO Function — Intelligent Load Optimisation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe unique \u003cstrong\u003eAUTO function\u003c\/strong\u003e monitors and adapts the boiler’s operating parameters to match the actual thermal demand of the building in real time. Rather than cycling to a fixed setpoint, AUTO continuously optimises output between minimum and maximum, reducing short-cycling, lowering average flow temperature and improving seasonal efficiency. It is engaged from the boiler’s built-in controls and requires no additional accessories.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003eAUTO functionContinuous modulationReduces short-cycling\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNatural Gas and LPG Compatible — LPG Conversion Kit Included\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE is supplied as a natural gas boiler but includes an \u003cstrong\u003eLPG conversion kit as standard\u003c\/strong\u003e, making it suitable for properties without a mains gas supply. Conversion is a straightforward procedure carried out by a Gas Safe registered engineer. No additional kit purchase is required, saving both cost and procurement time.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003eNatural gas + LPGLPG kit in the boxGas Safe conversion\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eLightweight at 29.3 kg — Colour-Coded Connections for Fast Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eWeighing just \u003cstrong\u003e29.3 kg dry\u003c\/strong\u003e, the E-Combi ONE is straightforward to wall-mount without heavy lifting equipment. Connection pipework uses \u003cstrong\u003ecolour-coded ports\u003c\/strong\u003e to reduce installation errors. All connections are in the same positions as previous Ariston boilers, enabling \u003cstrong\u003eeasy like-for-like retrofit\u003c\/strong\u003e without pipework modification. Minimum servicing clearances are just 5mm on left and right.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003e29.3 kgColour-coded connectionsEasy retrofit\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eBuilt-In Mechanical Clock — Ariston NET Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE includes a \u003cstrong\u003ebuilt-in 24-hour mechanical clock\u003c\/strong\u003e for basic heating and hot water scheduling without any external controls. It is also \u003cstrong\u003eAriston NET ready\u003c\/strong\u003e — the boiler can be connected to the Ariston NET wi-fi adapter (sold separately) to enable smartphone app control, remote diagnostics and energy monitoring, all without changing the boiler.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003eBuilt-in 24hr clockAriston NET readyApp upgradeable\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHorizontal Flue Kit Included — Ready for Standard Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThis package includes the \u003cstrong\u003eAriston Standard Horizontal Flue Kit (3318073)\u003c\/strong\u003e, covering a typical straight-through external wall installation. The flue system uses 60\/100mm coaxial (balanced flue) connections and is designed to minimise on-site cutting and adjustment. Extension kits are available separately for longer flue runs or non-standard configurations.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003eHorizontal flue kit included60\/100mm coaxialEasy standard fit\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eIPX5D Electrical Protection — Bathroom Safe Siting\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE carries an \u003cstrong\u003eIPX5D electrical protection rating\u003c\/strong\u003e, meaning it is protected against water jets from any direction. This allows the boiler to be sited closer to wet areas than a standard IP20 appliance, providing more flexibility for bathroom or kitchen installations in compact properties.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\u003cspan style=\"font-size: 13px\"\u003e\u003cspan style=\"background-color: rgb(0, 131, 119)\"\u003e\u003cspan style=\"color: rgb(255, 255, 255)\"\u003eIPX5D ratedSplash-proofFlexible siting\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eE-Combi ONE 24kW — Product Code 3301131\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eCondensing combi (heating + hot water, mains pressure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eErP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSeasonal Efficiency (ηs)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~90%+ seasonal space heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output Max (CH)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e22 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output Max (DHW)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e26 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eModulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — with AUTO function\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eHeating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow Temp Range (High Temp)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e35°C – 82°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow Temp Range (Low Temp \/ UFH)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Flow Rate (ΔT 35°C)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10.4 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Temp Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e36°C – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Pressure Min\/Max\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.2 \/ 7 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Min Flow Rate\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003ePhysical and Electrical\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e735 × 400 × 299 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDry Weight\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e29.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eElectrical Supply\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eElectrical Protection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIPX5D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eFlue and Gas\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue System\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBalanced flue (room-sealed), 60\/100mm coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue Kit\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStandard horizontal kit included (3318073)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eGas Types\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNatural gas G20 \/ LPG (conversion kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNOx Emissions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e53 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eSystem\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e8L built-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMin Ambient Temp\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eServicing Clearances (top\/front\/bottom)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e300 \/ 450 \/ 250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eServicing Clearances (left\/right)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 \/ 5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eIncluded in Package\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eAriston E-Combi ONE 24kW (3301131)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue Kit\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStandard horizontal flue kit (3318073)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eLPG Conversion Kit\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIncluded as standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eWarranty\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eStandard Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExtended Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 years on registration within 30 days (via Ariston)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInstallation Requirement\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eGas Safe registered engineer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eAriston Thermo UK Ltd, Milton Keynes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eIs the 24kW E-Combi ONE right for my home?\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe 24kW model delivers up to \u003cstrong\u003e10.4 L\/min of domestic hot water\u003c\/strong\u003e at a 35°C temperature rise. It is suitable for \u003cstrong\u003esmaller to medium homes (1–3 bedrooms, one bathroom)\u003c\/strong\u003e with moderate hot water and heating demand. For larger homes or properties with multiple bathrooms where simultaneous hot water demands are likely, consider the 30kW variant.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes the boiler include an LPG conversion kit?\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The E-Combi ONE is supplied as a natural boiler but the \u003cstrong\u003eLPG conversion kit is included in the box as standard\u003c\/strong\u003e. Conversion must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. No additional kit purchase is required.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is the AUTO function?\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe AUTO function is Ariston’s built-in load optimisation feature. It continuously adjusts the boiler’s heat output to match the actual demand of the heating system, rather than cycling between fixed on\/off states. This reduces short-cycling, improves seasonal efficiency, and lowers average flow temperature, which keeps the boiler in condensing mode for longer. AUTO is engaged via the boiler controls — no external accessories needed.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan the boiler be controlled via a smartphone app?\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe E-Combi ONE is \u003cstrong\u003eAriston NET ready\u003c\/strong\u003e — it can be connected to the Ariston NET wi-fi adapter (sold separately) to enable remote control via the Ariston NET app (iOS and Android). The adapter plugs into the boiler without any modification. Without the adapter, the built-in 24-hour mechanical clock provides basic time programming.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat are the warranty terms?\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe Ariston E-Combi ONE comes with a \u003cstrong\u003estandard 2-year manufacturer warranty\u003c\/strong\u003e. This can typically be extended to \u003cstrong\u003e5 years\u003c\/strong\u003e by registering on the Ariston website within 30 days of installation. A Gas Safe registered engineer must carry out the installation. Annual service by a Gas Safe engineer is recommended to maintain the warranty.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eAriston E-Combi ONE 30kW with Horizontal Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eHigher-output combi for larger homes and multiple bathrooms\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":62839768285533,"sku":"3301131-H-KIT","price":630.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonE-CombiONE24LPGCombiBoiler3301445withHorizontalFlueKit.jpg?v=1765306264"},{"product_id":"ariston-e-combi-one-30kw-boiler-including-horizontal-flue-kit","title":"Ariston E-Combi ONE 30kW Condensing Combi Gas Boiler with Horizontal Flue Kit - ErP A Rated, Xtratech Heat Exchanger, LPG Kit Included, 5-Year Warranty","description":"\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: transparent; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eAriston E-Combi ONE 30kW condensing combi boiler\u003c\/strong\u003e is the higher-output version of Ariston’s E-Combi ONE range, designed for \u003cstrong\u003elarger homes with multiple bathrooms or higher simultaneous hot water demand\u003c\/strong\u003e. It delivers up to \u003cstrong\u003e12.5 L\/min of domestic hot water\u003c\/strong\u003e on demand — enough to supply a power shower and basin tap simultaneously — with a \u003cstrong\u003e28kW central heating output\u003c\/strong\u003e to cover properties with larger radiator circuits. Like the 24kW, it uses Ariston’s patented \u003cstrong\u003eXtratech™ stainless steel heat exchanger\u003c\/strong\u003e with \u003cstrong\u003e142% wider waterways\u003c\/strong\u003e and the \u003cstrong\u003eAUTO function\u003c\/strong\u003e for continuous load optimisation. It weighs \u003cstrong\u003e31.9 kg\u003c\/strong\u003e and is \u003cstrong\u003eErP A rated\u003c\/strong\u003e, endorsed by the \u003cstrong\u003eEnergy Saving Trust\u003c\/strong\u003e. Supplied with \u003cstrong\u003estandard horizontal flue kit\u003c\/strong\u003e and \u003cstrong\u003eLPG conversion kit\u003c\/strong\u003e. \u003cstrong\u003e2-year warranty, extendable to 5 years\u003c\/strong\u003e on registration.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(130px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e30kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eOutput\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e12.5 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eHot Water\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eErP A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eRated\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e31.9 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e5-yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eLPG Kit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eIncluded\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003e⚠ Gas Safe Installation Required:\u003c\/strong\u003e This boiler must be installed by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. The installer must commission the boiler and complete the benchmark checklist. Annual service by a Gas Safe engineer is required to maintain the extended warranty.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eXtratech™ Stainless Steel Heat Exchanger — 142% Wider Waterways\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe heart of the E-Combi ONE is Ariston’s patented \u003cstrong\u003eXtratech™ single-coil stainless steel heat exchanger\u003c\/strong\u003e, designed with \u003cstrong\u003e142% wider waterways\u003c\/strong\u003e than previous generations. Wider channels reduce pressure drops, lower the risk of blockages from system debris, and provide a larger condensing surface for improved heat transfer. Stainless steel construction resists corrosion across a wide pH range, making the exchanger compatible with most system water conditions. It is easy to remove for cleaning or inspection. Tested and certified by \u003cstrong\u003eTUV Rheinland\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eXtratech™ single coil\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e142% wider waterways\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTUV Rheinland certified\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eErP A Rated — Energy Saving Trust Endorsed\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE holds an \u003cstrong\u003eErP A energy efficiency rating\u003c\/strong\u003e for seasonal space heating and is endorsed by the \u003cstrong\u003eEnergy Saving Trust\u003c\/strong\u003e — one of a small number of gas boilers on the market to achieve both. At 30% load (low-temperature return mode), efficiency reaches approximately \u003cstrong\u003e99%\u003c\/strong\u003e, meaning the boiler extracts almost all available energy from the gas during normal heating operation.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eErP A rated\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eEnergy Saving Trust endorsed\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e~99% efficiency at part load\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eAUTO Function — Intelligent Load Optimisation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe unique \u003cstrong\u003eAUTO function\u003c\/strong\u003e monitors and adapts the boiler’s operating parameters to match the actual thermal demand of the building in real time. Rather than cycling to a fixed setpoint, AUTO continuously optimises output between minimum and maximum, reducing short-cycling, lowering average flow temperature and improving seasonal efficiency. It is engaged from the boiler’s built-in controls and requires no additional accessories.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eAUTO function\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eContinuous modulation\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eReduces short-cycling\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNatural Gas and LPG Compatible — LPG Conversion Kit Included\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE is supplied as a natural gas boiler but includes an \u003cstrong\u003eLPG conversion kit as standard\u003c\/strong\u003e, making it suitable for properties without a mains gas supply. Conversion is a straightforward procedure carried out by a Gas Safe registered engineer. No additional kit purchase is required, saving both cost and procurement time.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNatural gas + LPG\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLPG kit in the box\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eGas Safe conversion\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eLightweight at 31.9 kg — Colour-Coded Connections for Fast Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eWeighing just \u003cstrong\u003e31.9 kg dry\u003c\/strong\u003e, the E-Combi ONE is straightforward to wall-mount without heavy lifting equipment. Connection pipework uses \u003cstrong\u003ecolour-coded ports\u003c\/strong\u003e to reduce installation errors. All connections are in the same positions as previous Ariston boilers, enabling \u003cstrong\u003eeasy like-for-like retrofit\u003c\/strong\u003e without pipework modification. Minimum servicing clearances are just 5mm on left and right.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e31.9 kg\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eColour-coded connections\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eEasy retrofit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eBuilt-In Mechanical Clock — Ariston NET Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE includes a \u003cstrong\u003ebuilt-in 24-hour mechanical clock\u003c\/strong\u003e for basic heating and hot water scheduling without any external controls. It is also \u003cstrong\u003eAriston NET ready\u003c\/strong\u003e — the boiler can be connected to the Ariston NET wi-fi adapter (sold separately) to enable smartphone app control, remote diagnostics and energy monitoring, all without changing the boiler.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBuilt-in 24hr clock\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eAriston NET ready\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eApp upgradeable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHorizontal Flue Kit Included — Ready for Standard Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThis package includes the \u003cstrong\u003eAriston Standard Horizontal Flue Kit (3318073)\u003c\/strong\u003e, covering a typical straight-through external wall installation. The flue system uses 60\/100mm coaxial (balanced flue) connections and is designed to minimise on-site cutting and adjustment. Extension kits are available separately for longer flue runs or non-standard configurations.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eHorizontal flue kit included\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e60\/100mm coaxial\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eEasy standard fit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eIPX5D Electrical Protection — Bathroom Safe Siting\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe E-Combi ONE carries an \u003cstrong\u003eIPX5D electrical protection rating\u003c\/strong\u003e, meaning it is protected against water jets from any direction. This allows the boiler to be sited closer to wet areas than a standard IP20 appliance, providing more flexibility for bathroom or kitchen installations in compact properties.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eIPX5D rated\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eSplash-proof\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eFlexible siting\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eBoiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eE-Combi ONE 30kW — Product Code 3301132\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eCondensing combi (heating + hot water, mains pressure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eErP Rating (Heating)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSeasonal Efficiency (ηs)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e~90%+ seasonal space heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output Max (CH)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e28 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eHeat Output Max (DHW)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eModulation\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — with AUTO function\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eHeating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow Temp Range (High Temp)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e35°C – 82°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlow Temp Range (Low Temp \/ UFH)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e20°C – 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eDomestic Hot Water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Flow Rate (ΔT 35°C)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e12.5 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Temp Range\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e36°C – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Pressure Min\/Max\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e0.2 \/ 7 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDHW Min Flow Rate\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003ePhysical and Electrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDimensions (H×W×D)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e735 × 400 × 299 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDry Weight\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e31.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eElectrical Supply\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e230V \/ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eElectrical Protection\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIPX5D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eFlue and Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue System\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBalanced flue (room-sealed), 60\/100mm coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue Kit\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStandard horizontal kit included (3318073)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eGas Types\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNatural gas G20 \/ LPG (conversion kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNOx Emissions\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e51 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eSystem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e8L built-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMin Ambient Temp\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eServicing Clearances (top\/front\/bottom)\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e300 \/ 450 \/ 250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eServicing Clearances (left\/right)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 \/ 5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eIncluded in Package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBoiler\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eAriston E-Combi ONE 30kW (3301132)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFlue Kit\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eStandard horizontal flue kit (3318073)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eLPG Conversion Kit\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIncluded as standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eWarranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eStandard Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eExtended Warranty\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 years on registration within 30 days (via Ariston)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInstallation Requirement\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eGas Safe registered engineer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eAriston Thermo UK Ltd, Milton Keynes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eIs the 30kW E-Combi ONE right for my home?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe 30kW model delivers up to \u003cstrong\u003e12.5 L\/min of domestic hot water\u003c\/strong\u003e at a 35°C temperature rise. It is designed for \u003cstrong\u003elarger homes (3–5+ bedrooms, two or more bathrooms)\u003c\/strong\u003e with higher simultaneous hot water and heating demand. The 30kW output provides sufficient hot water for power showers and bath filling alongside radiator heating.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes the boiler include an LPG conversion kit?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYes. The E-Combi ONE is supplied as a natural gas boiler but the \u003cstrong\u003eLPG conversion kit is included in the box as standard\u003c\/strong\u003e. Conversion must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. No additional kit purchase is required.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat is the AUTO function?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe AUTO function is Ariston’s built-in load optimisation feature. It continuously adjusts the boiler’s heat output to match the actual demand of the heating system, rather than cycling between fixed on\/off states. This reduces short-cycling, improves seasonal efficiency, and lowers average flow temperature, which keeps the boiler in condensing mode for longer. AUTO is engaged via the boiler controls — no external accessories needed.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eCan the boiler be controlled via a smartphone app?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe E-Combi ONE is \u003cstrong\u003eAriston NET ready\u003c\/strong\u003e — it can be connected to the Ariston NET wi-fi adapter (sold separately) to enable remote control via the Ariston NET app (iOS and Android). The adapter plugs into the boiler without any modification. Without the adapter, the built-in 24-hour mechanical clock provides basic time programming.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat are the warranty terms?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe Ariston E-Combi ONE comes with a \u003cstrong\u003estandard 2-year manufacturer warranty\u003c\/strong\u003e. This can typically be extended to \u003cstrong\u003e5 years\u003c\/strong\u003e by registering on the Ariston website within 30 days of installation. A Gas Safe registered engineer must carry out the installation. Annual service by a Gas Safe engineer is recommended to maintain the warranty.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eAriston E-Combi ONE 24kW with Horizontal Flue\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eSmaller output for 1-2 bedroom homes with single bathroom\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eHeatmiser neoHub Gen 2\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eSmart multi-zone heating hub for Neo thermostat system\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eProjoy PEAS AC Isolator 20–40A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eAC isolator for boiler connection compliance\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eAriston NET Wi-Fi Adapter\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eAdd smartphone control to the E-Combi ONE\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":62839845978461,"sku":"3301132-H-KIT","price":690.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonE-CombiONE24LPGCombiBoiler3301445withHorizontalFlueKit.jpg?v=1765306264"},{"product_id":"ariston-next-evo-x-11-lpg-instantaneous-gas-water-heater-3632535-11-l-min-room-sealed-multipoint-off-grid-erp-a","title":"Ariston Next Evo X 11 LPG Instantaneous Gas Water Heater 3632535 — 11 L\/min Room Sealed Multipoint Off-Grid ErP A","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\u003cp style=\"margin:0 0 18px;\"\u003eThe \u003cstrong\u003eAriston Next Evo X 11 LPG (MPN 3632535)\u003c\/strong\u003e is a \u003cstrong\u003eroom-sealed instantaneous gas water heater\u003c\/strong\u003e delivering \u003cstrong\u003e11 litres per minute\u003c\/strong\u003e of continuous hot water from an LPG (G30\/G31) supply. Designed for domestic and light commercial multipoint applications — simultaneously serving kitchens, bathrooms, and utility rooms — it is the ideal solution for \u003cstrong\u003eoff-gas-grid properties, caravans, lodges, leisure facilities, and anywhere with a high hot water demand but no mains gas connection\u003c\/strong\u003e. Ultra-compact at just \u003cstrong\u003e165mm deep\u003c\/strong\u003e (570 × 345mm face), it can be installed in airing cupboards, utility rooms, or any position within flue distance of an external wall. Features \u003cstrong\u003eoxygen-free copper heat exchanger, lean-rich low NOx burner, built-in temperature stabilisation, ECO mode, LED display with touch controls, post-ventilation system, and flame ionisation electronic ignition\u003c\/strong\u003e. \u003cstrong\u003eErP water heating energy efficiency Class A\u003c\/strong\u003e. Maximum heat output 19.3kW (G31). Minimum inlet pressure just \u003cstrong\u003e0.2 bar\u003c\/strong\u003e. \u003cstrong\u003e2-year warranty\u003c\/strong\u003e. Flue kit sold separately — see MPN 3319648.\u003c\/p\u003e\n\u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n\u003cstrong\u003e⚠ Gas Safe Registered Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with the manufacturer's installation manual, Gas Safety (Installation and Use) Regulations 1998, and current British Standards. The appliance requires a \u003cstrong\u003e230V \/ 50Hz mains electrical supply\u003c\/strong\u003e for ignition — a fused spur must be provided. A \u003cstrong\u003e60\/100mm coaxial flue kit is required\u003c\/strong\u003e and must be purchased separately if not already available (see MPN 3319648 below).\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n\u003cstrong\u003eℹ LPG Model — Off-Grid Ideal\u003c\/strong\u003e\u003cbr\u003eThis unit is factory-set for \u003cstrong\u003eLPG (G30 butane \/ G31 propane)\u003c\/strong\u003e and is specifically suited to properties off the natural gas grid — rural homes, holiday parks, glamping sites, care homes, and leisure installations. An Ariston-approved \u003cstrong\u003egas conversion kit\u003c\/strong\u003e is available if conversion to natural gas is later required. For natural gas, order the \u003cstrong\u003eNext Evo X 16 (MPN 3632533)\u003c\/strong\u003e instead.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e11 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eNominal flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e19.3 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMax heat output (G31)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e0.2 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMin inlet pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e165 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDepth only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eErP A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEnergy rated\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Oxygen-Free Copper Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003eoxygen-free copper heat exchanger\u003c\/strong\u003e delivers heat from the burner to the water more efficiently than standard copper, with superior resistance to corrosion and scaling over time. Oxygen-free copper contains a minimum of 99.99% copper with virtually no dissolved oxygen — eliminating the micro-porosity that causes conventional copper to oxidise internally over years of hot water contact. The result is a heat exchanger with a longer operating life and more consistent thermal performance across the product's service life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Low NOx Lean-Rich Burner — ErP Class A\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003elean-rich staged combustion burner\u003c\/strong\u003e reduces nitrogen oxide (NOx) emissions to 45–47 mg\/kWh — significantly below the ErP threshold for Class A rating. In a lean-rich burner the primary zone operates with excess air (lean) and the secondary zone with rich mixture — this staged approach lowers peak flame temperatures, which are the primary driver of thermal NOx formation. \u003cstrong\u003eWater heating energy efficiency η\u003c\/strong\u003e\u003cstrong\u003eWH\u003c\/strong\u003e is rated at Class A across both models, meeting the ErP Regulation 814\/2013 requirements for instantaneous gas water heaters.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ ECO Mode — Built-In Temperature Stabilisation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003eECO mode\u003c\/strong\u003e limits the output temperature to a 35–45°C band — ideal for summer use when incoming cold water is warmer and less heat input is needed, reducing gas consumption without the burner over-firing and cycling. The \u003cstrong\u003ebuilt-in temperature stabilisation\u003c\/strong\u003e system compensates for fluctuations in mains water pressure and incoming cold water temperature, maintaining a consistent output temperature regardless of draw-off rate. This prevents the \"cold sandwich\" effect common in basic instantaneous heaters where temperature drops when flow rates change.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Post-Ventilation \u0026amp; Overheat Sensor — Electronic Ignition\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003epost-ventilation system\u003c\/strong\u003e continues the fan for a period after burner shut-off — purging residual combustion gases from the heat exchanger and flue before the appliance returns to standby, reducing flue gas condensate formation and improving heat exchanger longevity. An \u003cstrong\u003eoverheat sensor\u003c\/strong\u003e shuts the appliance down safely if water temperature exceeds safe limits. The \u003cstrong\u003eelectronic ignition with flame ionisation\u003c\/strong\u003e replaces the standing pilot light — ignition only fires when hot water is drawn, eliminating continuous pilot gas consumption and reducing the risk of ignition failure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Ultra-Compact — 165mm Deep — LED Display\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;\"\u003eAt just \u003cstrong\u003e165mm deep with a 570 × 345mm face panel\u003c\/strong\u003e, the Next Evo X 11 fits in spaces where full-depth boilers cannot, making it ideal for \u003cstrong\u003eairing cupboards, kitchen cupboards, utility rooms, and plant rooms\u003c\/strong\u003e. The \u003cstrong\u003eLED display with touch buttons\u003c\/strong\u003e provides direct temperature adjustment and status readout from the appliance face, without requiring a separate controller. IPX4D ingress protection rating allows installation in damp environments including bathrooms (in the correct IP zone).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — Next Evo X 11 LPG (3632535)\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eMPN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e3632535\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGas Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eLPG — G30 (butane) \/ G31 (propane)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGas Category\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eII2H3P — I3B\/P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAppliance Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eRoom-sealed instantaneous (Type C13\/C33)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNominal DHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e11 L\/min\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum DHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2.5 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Nominal Heat Input\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e22.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Nominal Heat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e19.2 kW (G30) \/ 19.3 kW (G31)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin. Nominal Heat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e7.4 kW (G30) \/ 6.4 kW (G31)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Temp Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e35°C – 65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWater Pressure — Min \/ Max\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e0.2 bar\u003c\/strong\u003e \/ 10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eErP Water Heating Class\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e — ηWH 78.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNOx Emissions\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e45 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e58 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e230V \/ 50Hz — 29W consumption — internal fuse 3.15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eIPX4D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e60\/100mm coaxial — flue kit sold separately (3319648)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e570 × 345 × 165 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDry Weight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e13 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e2 years\u003c\/strong\u003e manufacturer's warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat does 11 litres per minute mean in practice?\u003c\/summary\u003e\u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe 11 L\/min nominal flow rate is the volume of hot water the heater can deliver per minute at the rated temperature rise. For a typical temperature rise from 12°C cold to 40°C output (a comfortable shower temperature), 11 L\/min is sufficient for one shower or basin outlet at a time — well-suited to a single bathroom, utility room, or supplement to the main heating system. Minimum activation flow is just 2.5 L\/min, so even low-flow taps and eco shower heads will trigger the burner without issue. The heater will deliver hot water at any flow rate between 2.5 L\/min and 11 L\/min continuously.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eCan this heater be converted to natural gas?\u003c\/summary\u003e\u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThis unit is factory-set for \u003cstrong\u003eLPG (G30\/G31 propane\/butane)\u003c\/strong\u003e. Ariston do offer conversion kits for the Next Evo X range allowing conversion between natural gas and LPG, but \u003cstrong\u003egas conversion must only be carried out by a Gas Safe registered engineer\u003c\/strong\u003e and must use the correct Ariston-approved conversion kit. The appliance gas category is II2H3P\/I3B\/P, meaning it is certified for use on both gas families — but the burner injectors, gas valve calibration, and pressure settings must all be correctly adjusted for the target gas. Using an incorrect gas type or unconverted injectors will result in incorrect combustion, CO risk, and will void the warranty. Contact Ariston or your distributor for the correct conversion kit code.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eDo I need a flue kit, and which one?\u003c\/summary\u003e\u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Next Evo X is a \u003cstrong\u003eroom-sealed (Type C) appliance\u003c\/strong\u003e that draws combustion air from and discharges flue gases to the outside through a \u003cstrong\u003e60\/100mm coaxial flue system\u003c\/strong\u003e. A flue kit is \u003cstrong\u003enot included\u003c\/strong\u003e with the water heater and must be purchased separately. For a standard installation through a wall to the outside, the \u003cstrong\u003eAriston Horizontal Flue Kit 60\/100 (SE) MPN 3319648\u003c\/strong\u003e is the correct flue kit — it includes all components needed for a normal through-wall horizontal termination up to 800mm. For vertical terminations, or for installations requiring extensions, elbows, or bends, additional Ariston flue accessories are available. All flue components used must be Ariston-approved and compatible with the 60\/100mm SE coaxial system.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat is the minimum water pressure required?\u003c\/summary\u003e\u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Next Evo X has an exceptionally low \u003cstrong\u003eminimum inlet water pressure of just 0.2 bar\u003c\/strong\u003e — far lower than the 0.5–1.0 bar minimum required by many competing instantaneous heaters. This makes it particularly suitable for \u003cstrong\u003eproperties with poor mains pressure, gravity-fed systems, and loft or rural installations\u003c\/strong\u003e where mains pressure can be marginal. Maximum working pressure is 10 bar. If the incoming pressure is above 3 bar, a pressure-reducing valve should be fitted upstream to protect the appliance and any downstream fittings.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs the mains electricity connection mandatory?\u003c\/summary\u003e\u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Next Evo X requires a \u003cstrong\u003e230V \/ 50Hz mains electrical supply\u003c\/strong\u003e for the electronic ignition system, the modulating gas valve, the fan, the LED display, and the flame ionisation detection circuit. The appliance draws \u003cstrong\u003e29W\u003c\/strong\u003e during operation. A fused spur (typically 3A fused) must be provided by a Part P registered electrician adjacent to the installation position. The appliance \u003cstrong\u003ecannot operate without mains power\u003c\/strong\u003e — it is not suitable for off-grid locations without a generator or battery inverter supply. The internal fuse is rated 3.15A.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat warranty does the Next Evo X carry?\u003c\/summary\u003e\u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Ariston Next Evo X carries a \u003cstrong\u003e2-year manufacturer's warranty\u003c\/strong\u003e as standard. Warranty claims require the installation to have been carried out by a Gas Safe registered engineer and in accordance with the Ariston installation manual. The appliance must be installed, commissioned, and maintained in accordance with the manufacturer's instructions, Gas Safety (Installation and Use) Regulations, and applicable British Standards. Ariston UK can be contacted via their website for warranty registration and support.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":64195698557277,"sku":"3632535","price":390.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonNextEvoXLPGInstantWaterHeater.jpg?v=1776250744"},{"product_id":"ariston-next-evo-x-16-natural-gas-instantaneous-water-heater-3632533-16-l-min-room-sealed-multipoint-erp-a-27kw","title":"Ariston Next Evo X 16 Natural Gas Instantaneous Water Heater 3632533 — 16 L\/min Room Sealed Multipoint ErP A 27kW","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eAriston Next Evo X 16 Natural Gas (MPN 3632533)\u003c\/strong\u003e is a \u003cstrong\u003eroom-sealed gas instantaneous water heater\u003c\/strong\u003e delivering \u003cstrong\u003e16 litres per minute\u003c\/strong\u003e of continuous hot water from a natural gas (G20) mains supply. With a \u003cstrong\u003emaximum heat output of 27.4kW\u003c\/strong\u003e and the highest ErP water heating load profile (XL), it is designed for \u003cstrong\u003elarger domestic properties and light commercial applications\u003c\/strong\u003e with high simultaneous hot water demand — hotels, offices, care facilities, and multi-bathroom homes. Compact at just \u003cstrong\u003e187mm deep\u003c\/strong\u003e, it installs in cupboards and utility rooms close to an external wall. Features \u003cstrong\u003eoxygen-free copper heat exchanger, lean-rich low NOx burner, ECO mode, built-in temperature stabilisation, LED touch display, post-ventilation, and flame ionisation ignition\u003c\/strong\u003e. \u003cstrong\u003eErP water heating energy efficiency Class A (η\u003csub\u003eWH\u003c\/sub\u003e 80.5%)\u003c\/strong\u003e. Minimum inlet pressure \u003cstrong\u003e0.2 bar\u003c\/strong\u003e. \u003cstrong\u003e2-year warranty\u003c\/strong\u003e. Flue kit sold separately — see MPN 3319648.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Gas Safe Registered Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with the manufacturer's installation manual, Gas Safety (Installation and Use) Regulations 1998, and current British Standards. The appliance requires a \u003cstrong\u003e230V \/ 50Hz mains electrical supply\u003c\/strong\u003e for ignition — a fused spur must be provided. A \u003cstrong\u003e60\/100mm coaxial flue kit is required\u003c\/strong\u003e and must be purchased separately if not already available (see MPN 3319648 below).\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ Natural Gas Model — ErP XL Load Profile\u003c\/strong\u003e\u003cbr\u003e\n    This unit is factory-set for \u003cstrong\u003enatural gas (G20)\u003c\/strong\u003e and achieves the highest ErP declared load profile \u003cstrong\u003eXL\u003c\/strong\u003e, indicating suitability for very high demand applications with daily fuel consumption of 24.8 kWh. For LPG (off-grid), order the \u003cstrong\u003eNext Evo X 11 LPG (MPN 3632535)\u003c\/strong\u003e. An Ariston-approved gas conversion kit is available if conversion between gas types is later required — Gas Safe registered installation only.\n  \u003c\/div\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e16 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eNominal flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e27.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMax heat output\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e0.2 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMin inlet pressure\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e187 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDepth only\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eErP A \/ XL\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEnergy rated\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Oxygen-Free Copper Heat Exchanger\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003eoxygen-free copper heat exchanger\u003c\/strong\u003e delivers heat from the burner to the water more efficiently than standard copper, with superior resistance to corrosion and scaling over time. Oxygen-free copper contains a minimum of 99.99% copper with virtually no dissolved oxygen — eliminating the micro-porosity that causes conventional copper to oxidise internally over years of hot water contact. The result is a heat exchanger with a longer operating life and more consistent thermal performance across the product's service life.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Low NOx Lean-Rich Burner — ErP Class A\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003elean-rich staged combustion burner\u003c\/strong\u003e reduces nitrogen oxide (NOx) emissions to 45–47 mg\/kWh — significantly below the ErP threshold for Class A rating. In a lean-rich burner the primary zone operates with excess air (lean) and the secondary zone with rich mixture — this staged approach lowers peak flame temperatures, which are the primary driver of thermal NOx formation. \u003cstrong\u003eWater heating energy efficiency η\u003csub\u003eWH\u003c\/sub\u003e\u003c\/strong\u003e is rated at Class A across both models, meeting the ErP Regulation 814\/2013 requirements for instantaneous gas water heaters.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ ECO Mode — Built-In Temperature Stabilisation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003eECO mode\u003c\/strong\u003e limits the output temperature to a 35–45°C band — ideal for summer use when incoming cold water is warmer and less heat input is needed, reducing gas consumption without the burner over-firing and cycling. The \u003cstrong\u003ebuilt-in temperature stabilisation\u003c\/strong\u003e system compensates for fluctuations in mains water pressure and incoming cold water temperature, maintaining a consistent output temperature regardless of draw-off rate. This prevents the \"cold sandwich\" effect common in basic instantaneous heaters where temperature drops when flow rates change.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Post-Ventilation \u0026amp; Overheat Sensor — Electronic Ignition\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003epost-ventilation system\u003c\/strong\u003e continues the fan for a period after burner shut-off — purging residual combustion gases from the heat exchanger and flue before the appliance returns to standby, reducing flue gas condensate formation and improving heat exchanger longevity. An \u003cstrong\u003eoverheat sensor\u003c\/strong\u003e shuts the appliance down safely if water temperature exceeds safe limits. The \u003cstrong\u003eelectronic ignition with flame ionisation\u003c\/strong\u003e replaces the standing pilot light — ignition only fires when hot water is drawn, eliminating continuous pilot gas consumption and reducing the risk of ignition failure.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 16 L\/min — High Demand Multi-Point\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAt \u003cstrong\u003e16 L\/min nominal flow\u003c\/strong\u003e, the Next Evo X 16 can supply \u003cstrong\u003emultiple simultaneous draw-off points\u003c\/strong\u003e — a shower and basin running concurrently, or back-to-back use by multiple occupants without the temperature dipping between uses. With a maximum heat output of \u003cstrong\u003e27.4kW\u003c\/strong\u003e and ErP load profile XL, it is the highest-capacity model in the Next Evo X range and is suited to properties that would otherwise require a large unvented cylinder. Despite this output, it remains compact at 187mm deep with an identical face size to the 11L model.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — Next Evo X 16 Natural Gas (3632533)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eMPN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e3632533\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGas Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eNatural gas — G20\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGas Category\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eII2H3P — I3B\/P\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAppliance Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eRoom-sealed instantaneous (Type C13\/C33)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNominal DHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e16 L\/min\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum DHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2.5 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Nominal Heat Input\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Nominal Heat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e27.4 kW\u003c\/strong\u003e (G20)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin. Nominal Heat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.7 kW (G20)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Temp Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e35°C – 65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWater Pressure — Min \/ Max\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e0.2 bar\u003c\/strong\u003e \/ 10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eErP Water Heating Class\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e — η\u003csub\u003eWH\u003c\/sub\u003e 80.5% — Load profile XL\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNOx Emissions\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e47 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e63 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e230V \/ 50Hz — 44W consumption — internal fuse 3.15A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eIPX4D\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e60\/100mm coaxial — flue kit sold separately (3319648)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e570 × 345 × 187 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDry Weight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e2 years\u003c\/strong\u003e manufacturer's warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat does 16 litres per minute mean in practice?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe 16 L\/min nominal flow rate is the volume of hot water the heater can deliver per minute at the rated temperature rise. For a typical temperature rise from 12°C cold to 40°C output (a comfortable shower temperature), 16 L\/min is sufficient for simultaneous use at two points — for example, a shower and a basin, or two bathrooms in sequence — making it well-suited to larger properties with higher simultaneous demand. Minimum activation flow is just 2.5 L\/min, so even low-flow taps and eco shower heads will trigger the burner without issue. The heater will deliver hot water at any flow rate between 2.5 L\/min and 16 L\/min continuously.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eCan this heater be converted to LPG?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThis unit is factory-set for \u003cstrong\u003enatural gas (G20)\u003c\/strong\u003e. Ariston do offer conversion kits for the Next Evo X range allowing conversion between natural gas and LPG, but \u003cstrong\u003egas conversion must only be carried out by a Gas Safe registered engineer\u003c\/strong\u003e and must use the correct Ariston-approved conversion kit. The appliance gas category is II2H3P\/I3B\/P, meaning it is certified for use on both gas families — but the burner injectors, gas valve calibration, and pressure settings must all be correctly adjusted for the target gas. Using an incorrect gas type or unconverted injectors will result in incorrect combustion, CO risk, and will void the warranty. Contact Ariston or your distributor for the correct conversion kit code.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eDo I need a flue kit, and which one?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Next Evo X is a \u003cstrong\u003eroom-sealed (Type C) appliance\u003c\/strong\u003e that draws combustion air from and discharges flue gases to the outside through a \u003cstrong\u003e60\/100mm coaxial flue system\u003c\/strong\u003e. A flue kit is \u003cstrong\u003enot included\u003c\/strong\u003e with the water heater and must be purchased separately. For a standard installation through a wall to the outside, the \u003cstrong\u003eAriston Horizontal Flue Kit 60\/100 (SE) MPN 3319648\u003c\/strong\u003e is the correct flue kit — it includes all components needed for a normal through-wall horizontal termination up to 800mm. For vertical terminations, or for installations requiring extensions, elbows, or bends, additional Ariston flue accessories are available. All flue components used must be Ariston-approved and compatible with the 60\/100mm SE coaxial system.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat is the minimum water pressure required?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Next Evo X has an exceptionally low \u003cstrong\u003eminimum inlet water pressure of just 0.2 bar\u003c\/strong\u003e — far lower than the 0.5–1.0 bar minimum required by many competing instantaneous heaters. This makes it particularly suitable for \u003cstrong\u003eproperties with poor mains pressure, gravity-fed systems, and loft or rural installations\u003c\/strong\u003e where mains pressure can be marginal. Maximum working pressure is 10 bar. If the incoming pressure is above 3 bar, a pressure-reducing valve should be fitted upstream to protect the appliance and any downstream fittings.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs the mains electricity connection mandatory?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Next Evo X requires a \u003cstrong\u003e230V \/ 50Hz mains electrical supply\u003c\/strong\u003e for the electronic ignition system, the modulating gas valve, the fan, the LED display, and the flame ionisation detection circuit. The appliance draws \u003cstrong\u003e44W\u003c\/strong\u003e during operation. A fused spur (typically 3A fused) must be provided by a Part P registered electrician adjacent to the installation position. The appliance \u003cstrong\u003ecannot operate without mains power\u003c\/strong\u003e — it is not suitable for off-grid locations without a generator or battery inverter supply. The internal fuse is rated 3.15A.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat warranty does the Next Evo X carry?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Ariston Next Evo X carries a \u003cstrong\u003e2-year manufacturer's warranty\u003c\/strong\u003e as standard. Warranty claims require the installation to have been carried out by a Gas Safe registered engineer and in accordance with the Ariston installation manual. The appliance must be installed, commissioned, and maintained in accordance with the manufacturer's instructions, Gas Safety (Installation and Use) Regulations, and applicable British Standards. Ariston UK can be contacted via their website for warranty registration and support.\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":64195812098397,"sku":"3632533","price":470.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonNextEvoXLPGInstantWaterHeater.jpg?v=1776250744"},{"product_id":"ariston-e-combi-one-24kw-combi-boiler-with-100mm-vertical-flue-kit-3319235-holiday-home-static-caravan","title":"Ariston E-Combi ONE 24kW Combi Boiler with 100mm Vertical Flue Kit 3319235 – Holiday Home Static Caravan","description":"\u003cdiv style=\"font-size: 16px; font-family: Arial,sans-serif; color: #222; max-width: 900px; margin: 0 auto; line-height: 1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAriston E-Combi ONE 24 kW Condensing Combi Boiler (Part No. 3301131)\u003c\/strong\u003e with \u003cstrong\u003e5 Years Warranty\u003c\/strong\u003e paired with the \u003cstrong\u003e100mm Vertical Flue Kit (Part No. 3319235) and Vertical Starter (Part No. 3318079)\u003c\/strong\u003e is the correct installation pack for \u003cstrong\u003estatic caravans, holiday lodges, park homes, and leisure accommodation\u003c\/strong\u003e where the boiler must flue vertically through the roof. The 3319235 is \u003cstrong\u003enot the standard domestic Ariston vertical flue kit\u003c\/strong\u003e — it uses a \u003cstrong\u003e100mm-diameter terminal\u003c\/strong\u003e specifically sized to fit the smaller roof penetrations and \u003cstrong\u003eexisting 100mm flashings already fitted for older Morco and Worcester Bosch boilers\u003c\/strong\u003e, making it the ideal drop-in replacement in the leisure sector without disturbing the roof structure. The boiler itself delivers \u003cstrong\u003e94% seasonal efficiency\u003c\/strong\u003e, a \u003cstrong\u003e1:7 modulation ratio\u003c\/strong\u003e, and Ariston's \u003cstrong\u003epatented XtraTech™ stainless steel heat exchanger\u003c\/strong\u003e — proven technology in a lightweight 29.3 kg package well suited to the space constraints of holiday home plant rooms.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 18px; flex: 1 1 120px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold;\"\u003e100 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eTerminal Diameter\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 18px; flex: 1 1 120px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold;\"\u003e1240 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eTotal Flue Kit Length\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 18px; flex: 1 1 120px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold;\"\u003e575 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eUsable Flue Length\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 18px; flex: 1 1 120px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eSeasonal Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 18px; flex: 1 1 120px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold;\"\u003e22 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eCH Max Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 18px; flex: 1 1 120px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold;\"\u003e29.3 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; margin-top: 4px;\"\u003eBoiler Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; padding: 14px 16px; border-radius: 6px; margin: 18px 0;\"\u003e\n\u003cstrong\u003e⚠ Gas Safe Registered Installer Required:\u003c\/strong\u003e This boiler must be installed and commissioned by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with the Gas Safety (Installation and Use) Regulations 1998, current Building Regulations, and BS 5440-1:2008. This applies equally to holiday homes, park homes, and leisure properties as to permanent dwellings.\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 4px solid #c0392b; padding: 14px 16px; border-radius: 6px; margin: 18px 0;\"\u003e\n\u003cstrong\u003e⚠ Not the Standard Domestic Flue Kit — 100mm Terminal Only:\u003c\/strong\u003e The 3319235 uses a \u003cstrong\u003e100mm-diameter roof terminal\u003c\/strong\u003e, compared to the \u003cstrong\u003e125mm terminal on the standard Ariston domestic vertical flue kits (3318080 \/ 3318081)\u003c\/strong\u003e. These are \u003cstrong\u003enot interchangeable\u003c\/strong\u003e. If your installation uses a standard domestic 125mm flashing or a full-sized pitched-roof plate, you need the \u003cstrong\u003e3318080 or 3318081 kit\u003c\/strong\u003e instead. The 3319235 is correct only where a 100mm terminal opening is already present or where a compact 100mm flashing will be fitted.\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377; padding: 14px 16px; border-radius: 6px; margin: 18px 0;\"\u003e\n\u003cstrong\u003eℹ What's Included in This Pack:Ariston E-Combi ONE 24 kW Combi Boiler\u003c\/strong\u003e — Part No. 3301131\u003cstrong\u003eVertical Starter\u003c\/strong\u003e — Part No. 3318079 (clamps to boiler exhaust manifold; push-fit to flue kit above)\u003cstrong\u003eVertical Flue Kit — 100mm Black Terminal\u003c\/strong\u003e — Part No. 3319235 (Ø60\/100 concentric, 1240 mm total, 575 mm usable)\u003cstrong\u003eLPG Conversion Kit\u003c\/strong\u003e — included as standard (essential for bottled-gas holiday home sites)\u003cstrong\u003eNot included:\u003c\/strong\u003e Roof flashing \/ terminal cowl (must suit your existing 100mm roof penetration), flue support brackets (3318015 recommended per extension), and any additional extension pipes if the ceiling height requires them.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff3cd; border-left: 4px solid #e6a817; padding: 14px 16px; border-radius: 6px; margin: 18px 0;\"\u003e\n\u003cstrong\u003e⚠ Flashing Compatibility — Measure Before Ordering:\u003c\/strong\u003e This kit is designed to pass through an existing \u003cstrong\u003e100mm-diameter roof flashing\u003c\/strong\u003e — the type commonly found on static caravans previously fitted with \u003cstrong\u003eMorco or Worcester Bosch boilers\u003c\/strong\u003e. If your site has a larger aperture, or no flashing is currently fitted, a suitable 100mm cowl or flashing must be sourced separately. \u003cstrong\u003eDo not attempt to fit this terminal into a 125mm flashing\u003c\/strong\u003e — the smaller terminal will not seal correctly in the larger opening.\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 16px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003e100mm Terminal — Legacy Flashing Compatible\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003e3319235 uses a 100mm-diameter terminal\u003c\/strong\u003e — specifically designed for the leisure boiler market where older \u003cstrong\u003eMorco and Worcester Bosch installations left 100mm roof penetrations\u003c\/strong\u003e. Replacing a failed leisure boiler with this pack avoids any roof or ceiling work, making changeover significantly faster and lower-cost on a managed holiday park.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eXtraTech™ Stainless Steel Heat Exchanger\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAriston's \u003cstrong\u003epatented single-coil XtraTech™ stainless steel heat exchanger\u003c\/strong\u003e features \u003cstrong\u003ewider waterways\u003c\/strong\u003e than conventional copper alternatives, resisting limescale accumulation and improving long-term reliability — important in holiday home applications where boilers may sit dormant for extended periods between letting seasons.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eLPG Ready — Bottled Gas Site Compatible\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAn \u003cstrong\u003eLPG conversion kit is included as standard\u003c\/strong\u003e in every E-Combi ONE box. Most holiday parks and static caravan sites operate on \u003cstrong\u003ebottled LPG (propane \/ G31)\u003c\/strong\u003e rather than mains natural gas — the conversion is carried out at commissioning by the Gas Safe engineer, with no additional parts required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eAUTO Function — Efficiency Without User Input\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003eAUTO function\u003c\/strong\u003e continuously monitors system behaviour and \u003cstrong\u003eautomatically adjusts boiler output and pump speed\u003c\/strong\u003e to match actual heating demand. In holiday home use, where occupancy patterns vary from full-time residence, this prevents energy waste during partial-occupancy periods without requiring guests or owners to manually adjust settings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eCompact \u0026amp; Lightweight — 29.3 kg, 315 mm Deep\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAt \u003cstrong\u003e29.3 kg and only 315 mm deep\u003c\/strong\u003e, the E-Combi ONE fits comfortably in the restricted plant spaces typical of static caravans, park home utility cupboards, and lodge boiler housings. \u003cstrong\u003eAll connection points match previous Ariston models\u003c\/strong\u003e for straightforward like-for-like replacement without re-routing pipework.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003e1:7 Modulation — Quiet, Efficient Part-Load\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eA \u003cstrong\u003e1:7 modulation ratio\u003c\/strong\u003e lets the boiler throttle back to around 3.1 kW minimum output, avoiding the short-cycling and noise that on\/off boilers produce in smaller, well-insulated spaces. At \u003cstrong\u003e49 dB (Band XL)\u003c\/strong\u003e, it is one of the quieter options in its class — a meaningful benefit in thin-walled leisure accommodation where mechanical noise carries easily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 24px 0;\"\u003e\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background: #008377CF; color: #fff;\"\u003e\u003cth colspan=\"2\" style=\"padding: 10px 12px; text-align: left;\"\u003eTechnical Specifications — E-Combi ONE 24 kW (3301131)\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr style=\"background: #008377CF; color: #fff; font-size: 13px;\"\u003e\n\u003cth style=\"padding: 6px 12px; text-align: left; font-weight: 600;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding: 6px 12px; text-align: left; font-weight: 600;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBoiler Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e3301131\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eErP Energy Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003eA \/ A (Heating \/ DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSeasonal Space Heating Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eWater Heating Energy Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e83%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSAP 2009\/2012 Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e89.4%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Heat Output (Max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e22 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Heat Output (Max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e26 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Flow Rate ΔT 35°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e10.4 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Temperature Range (High)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e35 – 82°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Temperature Range (Low \/ UFH)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e20 – 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e36 – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eModulation Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e1:7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eMin DHW Flow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e2 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Pressure Min \/ Max\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e0.2 \/ 7.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBuilt-in Expansion Vessel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e8 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eNoise Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e49 dB \/ Band XL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eNOx Emissions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e53 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBoiler Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e29.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDimensions H × W × D\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e745 × 400 × 315 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eServicing Clearances — Top \/ Front \/ Bottom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e300 \/ 450 \/ 250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eServicing Clearances — Left \/ Right\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e5 \/ 5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eElectrical Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003eIPX5D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eGas Types Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003eNatural gas (G20) and LPG propane (G31) — LPG kit included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #008377CF; color: #fff;\"\u003e\u003ctd colspan=\"2\" style=\"padding: 8px 12px; font-weight: bold;\"\u003e100mm Vertical Flue Kit Specifications (3319235 + 3318079)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eFlue Terminal Part No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e3319235 — 100mm Black Terminal (Caravan \u0026amp; Leisure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eVertical Starter Part No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e3318079\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eFlue Pipe Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003eØ60\/100 mm coaxial (concentric exhaust \/ air intake)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTerminal Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e100 mm\u003c\/strong\u003e — fits existing Morco \u0026amp; Worcester Bosch legacy flashings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTotal Flue Kit Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e1240 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eUsable Flue Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e575 mm (varies with flashing type fitted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eMax Vertical Flue Run — 24 kW on Ø60\/100\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e8 metres total (see installation manual for elbow deductions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003ePush-fit with lip seal throughout — no clamps required on flue joints\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003eStandard Domestic Equivalent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border-bottom: 1px solid #e0e0e0;\"\u003e3318080 (black, 125mm terminal) \/ 3318081 (red, 125mm terminal) — \u003cstrong\u003enot this kit\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eRoof Flashing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eNot included — must suit existing 100mm roof penetration; do not use 125mm domestic flashings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 28px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 12px 16px; border-radius: 6px 6px 0 0; font-weight: bold; font-size: 16px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-top: none; padding: 0;\"\u003e\u003csummary style=\"padding: 14px 16px; cursor: pointer; font-weight: 600; background: #f9f9f9;\"\u003eWhy is the 3319235 different from the standard Ariston vertical flue kit?\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 16px; border-top: 1px solid #eee;\"\u003eThe standard Ariston domestic vertical flue kits — \u003cstrong\u003e3318080 (black terminal)\u003c\/strong\u003e and \u003cstrong\u003e3318081 (red terminal)\u003c\/strong\u003e — both use a \u003cstrong\u003e125mm-diameter terminal\u003c\/strong\u003e designed for conventional domestic roof flashings. The \u003cstrong\u003e3319235 uses a 100mm terminal\u003c\/strong\u003e specifically for the leisure and holiday home market, where boilers are typically installed in static caravans and park homes that were previously fitted with \u003cstrong\u003eMorco or Worcester Bosch boilers\u003c\/strong\u003e using 100mm roof penetrations. Swapping to this kit avoids disturbing the existing roof flashing — a significant practical and cost advantage on managed holiday parks where minimal structural disruption per unit is essential.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border: 1px solid #ddd; border-top: none; padding: 0;\"\u003e\u003csummary style=\"padding: 14px 16px; cursor: pointer; font-weight: 600; background: #f9f9f9;\"\u003eDoes the 3319235 kit include the Vertical Starter (3318079)?\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 16px; border-top: 1px solid #eee;\"\u003eThe \u003cstrong\u003e3318079 Vertical Starter is included in this pack\u003c\/strong\u003e. It is a mandatory component — without it the flue terminal cannot connect to the boiler's exhaust manifold. The starter clamps to the boiler and provides the push-fit socket into which the 3319235 flue kit inserts above.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border: 1px solid #ddd; border-top: none; padding: 0;\"\u003e\u003csummary style=\"padding: 14px 16px; cursor: pointer; font-weight: 600; background: #f9f9f9;\"\u003eCan I use this kit if there is no existing flashing — for example in a new-build lodge?\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 16px; border-top: 1px ignore #e0e0e0;\"\u003eYes, provided you fit a \u003cstrong\u003esuitable 100mm roof cowl or flashing\u003c\/strong\u003e appropriate to your roof construction and pitch. Because the 3319235 uses a non-standard 100mm terminal, \u003cstrong\u003estandard Ariston domestic pitched-roof flashings (3318009 \/ 3318010) will not seal correctly\u003c\/strong\u003e — these are sized for the 125mm terminal. Source a 100mm cowl or flashing compatible with your roof material from a leisure\/caravan specialist or roofing supplier. Always ensure the penetration is fully weatherproofed before commissioning.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border: 1px solid #ddd; border-top: none; padding: 0;\"\u003e\u003csummary style=\"padding: 14px 16px; cursor: pointer; font-weight: 600; background: #f9f9f9;\"\u003eCan I extend the vertical run if the kit is too short for my ceiling height?\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 16px; border-top: 1px solid #eee;\"\u003eYes. Standard Ariston \u003cstrong\u003eØ60\/100 coaxial extension pipes\u003c\/strong\u003e — \u003cstrong\u003e500mm (3318078)\u003c\/strong\u003e or \u003cstrong\u003e1000mm (3318077)\u003c\/strong\u003e — can be inserted between the vertical starter and the 3319235 flue kit to increase the total height. The \u003cstrong\u003emaximum permissible vertical run for the E-Combi ONE 24 kW on Ø60\/100 is 8 metres\u003c\/strong\u003e. Each 90° elbow (3318075) deducts from this maximum — check the installation manual for exact deduction figures. \u003cstrong\u003eDo not cut the 3319235 terminal kit itself.\u003c\/strong\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border: 1px solid #ddd; border-top: none; padding: 0;\"\u003e\u003csummary style=\"padding: 14px 16px; cursor: pointer; font-weight: 600; background: #f9f9f9;\"\u003eDoes the boiler work on LPG for sites without mains gas?\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 16px; border-top: 1px solid #eee;\"\u003eYes. An \u003cstrong\u003eLPG conversion kit is included as standard\u003c\/strong\u003e in the E-Combi ONE box. The conversion to LPG propane (G31) is carried out at commissioning by the Gas Safe engineer — no additional parts need to be purchased. This makes the pack directly suitable for holiday parks and caravan sites supplied by \u003cstrong\u003ebulk LPG tanks or cylinder manifolds\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border: 1px solid #ddd; border-top: none; padding: 0;\"\u003e\u003csummary style=\"padding: 14px 16px; cursor: pointer; font-weight: 600; background: #f9f9f9;\"\u003eIs the E-Combi ONE suitable for frost protection during the off-season?\u003c\/summary\u003e\u003cdiv style=\"padding: 14px 16px; border-top: 1px solid #eee;\"\u003eThe E-Combi ONE includes an \u003cstrong\u003eintegrated anti-frost device\u003c\/strong\u003e that activates the burner and pump automatically if the boiler's internal temperature drops to a critical level. However, this only protects the boiler itself — it does \u003cstrong\u003enot\u003c\/strong\u003e protect external pipework, the wider heating system, or unheated spaces within the property. For holiday homes left unoccupied in winter, full system drain-down or a dedicated site-wide frost protection strategy is still recommended.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":64898018083165,"sku":"3301131-3319235-KIT","price":650.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonECombiONE24LPGCombiBoiler3301445withVerticalFlueKit.jpg?v=1780580349"},{"product_id":"ariston-e-combi-one-30kw-combi-boiler-with-100mm-vertical-flue-kit-3319235-holiday-home-static-caravan","title":"Ariston E-Combi ONE 30kW Combi Boiler with 100mm Vertical Flue Kit 3319235 – Holiday Home Static Caravan","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAriston E-Combi ONE 30 kW Condensing  Combi Boiler Gas Boiler (Part No. 3301132)\u003c\/strong\u003e paired with the \u003cstrong\u003e100mm Vertical Flue Kit (Part No. 3319235) and Vertical Starter (Part No. 3318079)\u003c\/strong\u003e is the higher-output version of the popular E-Combi ONE leisure pack, designed for \u003cstrong\u003elarger static caravans, holiday lodges, and park homes\u003c\/strong\u003e that need the additional domestic hot water and heating capacity of a 30 kW boiler. Like the 24 kW variant, it uses the \u003cstrong\u003e3319235 100mm-terminal vertical flue kit\u003c\/strong\u003e — the specialist leisure-market flue that fits \u003cstrong\u003eexisting 100mm roof penetrations left by older Morco and Worcester Bosch boilers\u003c\/strong\u003e, eliminating any need to disturb the roof structure on a changeover. Backed by Ariston's \u003cstrong\u003epatented XtraTech™ stainless steel heat exchanger\u003c\/strong\u003e, \u003cstrong\u003e94% seasonal efficiency\u003c\/strong\u003e, and a \u003cstrong\u003e1:7 modulation ratio\u003c\/strong\u003e, the 30 kW model delivers a \u003cstrong\u003e12.5 l\/min DHW flow rate\u003c\/strong\u003e — meaningfully better than the 24 kW unit for properties with two shower rooms or higher simultaneous hot water demand. The \u003cstrong\u003eLPG conversion kit is included as standard\u003c\/strong\u003e, making it directly suitable for sites on bottled propane.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:22px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 120px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e100 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eTerminal Diameter\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 120px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e28 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eCH Max Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 120px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e12.5 l\/m\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eDHW Flow Rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 120px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eSeasonal Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 120px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e1240 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eTotal Flue Kit Length\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 120px;text-align: center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e31.9 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eBoiler Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:4px solid #c0392b;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n\u003cstrong\u003e⚠ Gas Safe Registered Installer Required:\u003c\/strong\u003e This boiler must be installed and commissioned by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with the Gas Safety (Installation and Use) Regulations 1998, current Building Regulations, and BS 5440-1:2008. This applies equally to holiday homes, park homes, and leisure properties as to permanent dwellings.\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:4px solid #c0392b;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n\u003cstrong\u003e⚠ Not the Standard Domestic Flue Kit — 100mm Terminal Only:\u003c\/strong\u003e The \u003cstrong\u003e3319235 uses a 100mm-diameter terminal\u003c\/strong\u003e, not the \u003cstrong\u003e125mm terminal found on the standard Ariston domestic vertical flue kits (3318080 \/ 3318081)\u003c\/strong\u003e. These sizes are \u003cstrong\u003enot interchangeable\u003c\/strong\u003e. This kit is correct only where a 100mm roof opening already exists or where a compact 100mm cowl will be fitted. If you need a 125mm terminal for a domestic installation, order the \u003cstrong\u003e3318080 (black) or 3318081 (red)\u003c\/strong\u003e instead.\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n\u003cstrong\u003eℹ What's Included in This Pack:Ariston E-Combi ONE 30 kW Combi Boiler\u003c\/strong\u003e — Part No. 3301132\u003cstrong\u003eVertical Starter\u003c\/strong\u003e — Part No. 3318079 (clamps to boiler exhaust manifold; push-fit to flue kit above)\u003cstrong\u003eVertical Flue Kit — 100mm Black Terminal\u003c\/strong\u003e — Part No. 3319235 (Ø60\/100 concentric, 1240 mm total, 575 mm usable)\u003cstrong\u003eLPG Conversion Kit\u003c\/strong\u003e — included as standard (essential for bottled-gas holiday home sites)\u003cstrong\u003eNot included:\u003c\/strong\u003e Roof flashing \/ terminal cowl (must suit your existing 100mm roof penetration — do not use standard Ariston 125mm domestic flashings), flue support brackets (3318015 recommended per extension), and any additional Ø60\/100 extension pipes if the ceiling height requires them.\u003c\/div\u003e\n\u003cdiv style=\"background:#fff3cd;border-left:4px solid #e6a817;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n\u003cstrong\u003e⚠ 24 kW vs 30 kW — Choosing the Right Output:\u003c\/strong\u003e The 30 kW model produces a \u003cstrong\u003e12.5 l\/min DHW flow rate\u003c\/strong\u003e versus \u003cstrong\u003e10.4 l\/min on the 24 kW\u003c\/strong\u003e — a 20% improvement that is meaningful on properties with two bathrooms or a shower and bath running simultaneously. For lodges and larger static caravans with more than one wet room, or with a higher radiator count, the 30 kW is the appropriate choice. For a single-bathroom caravan with up to 8–10 radiators, the \u003cstrong\u003e24 kW (3301131) pack\u003c\/strong\u003e is sufficient and more economical to run at part load.\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin:24px 0;\"\u003e\n\u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e100mm Terminal — Legacy Flashing Compatible\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003e3319235 uses a 100mm-diameter terminal\u003c\/strong\u003e purpose-built for the leisure market, where \u003cstrong\u003eMorco and Worcester Bosch boilers historically used 100mm roof penetrations\u003c\/strong\u003e. Replacing either brand on an existing site with this pack requires no roof or ceiling structural work — the terminal passes through the existing aperture and cowl, making changeover faster and cheaper on a managed holiday park with multiple units.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e30 kW — Higher DHW Output for Larger Lodges\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eThe step from 24 kW to 30 kW increases maximum \u003cstrong\u003eDHW heat output from 26 kW to 30 kW\u003c\/strong\u003e and \u003cstrong\u003eflow rate from 10.4 to 12.5 l\/min at ΔT35°C\u003c\/strong\u003e. For a holiday lodge with two shower rooms, or a large static caravan where guests frequently use the bathroom simultaneously, this difference prevents the flow temperature drop and reduced pressure that a 24 kW unit would experience under peak demand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eXtraTech™ Stainless Steel Heat Exchanger\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eAriston's \u003cstrong\u003epatented single-coil XtraTech™ stainless steel heat exchanger\u003c\/strong\u003e features \u003cstrong\u003ewider waterways\u003c\/strong\u003e than conventional copper alternatives, improving long-term resistance to limescale and corrosion — important on leisure properties where water treatment may not be as consistently maintained as in a permanent domestic system, and where the boiler may stand idle between letting seasons.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eLPG Ready — Bottled Gas Site Compatible\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eAn \u003cstrong\u003eLPG conversion kit is included as standard\u003c\/strong\u003e in every E-Combi ONE box. The conversion to propane (G31) is completed at commissioning by the Gas Safe engineer with no additional parts. Holiday parks and caravan sites typically operate on \u003cstrong\u003ebulk LPG tanks or cylinder manifolds\u003c\/strong\u003e — this boiler is ready for those setups without further hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eAUTO Function — Efficiency Without User Input\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eAUTO function\u003c\/strong\u003e continuously monitors heating system behaviour and \u003cstrong\u003eautomatically adjusts boiler output and pump speed\u003c\/strong\u003e to match actual demand. In holiday letting use, where occupancy varies from busy peak weeks to empty off-season periods, this prevents energy waste without requiring owners or guests to reconfigure settings between visits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e1:7 Modulation — 51 dB Quiet Operation\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:15px;\"\u003eA \u003cstrong\u003e1:7 modulation ratio\u003c\/strong\u003e allows the 30 kW boiler to turn down to approximately 4.3 kW minimum output, avoiding disruptive short-cycling in well-heated spaces. At \u003cstrong\u003e51 dB (Band XL)\u003c\/strong\u003e, audible noise is minimised — a meaningful advantage in the thin-walled construction of static caravans and lodges where mechanical noise transfers easily between rooms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:24px 0;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background:#008377CF;color:#fff;\"\u003e\u003cth style=\"padding:10px 12px;text-align:left;\" colspan=\"2\"\u003eTechnical Specifications — E-Combi ONE 30 kW (3301132)\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#008377CF;color:#fff;font-size:13px;\"\u003e\n\u003cth style=\"padding:6px 12px;text-align:left;font-weight:600;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding:6px 12px;text-align:left;font-weight:600;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBoiler Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e3301132\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eErP Energy Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003eA \/ A (Heating \/ DHW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSeasonal Space Heating Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eWater Heating Energy Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e82%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSAP 2009\/2012 Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e89.4%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Heat Output (Max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e28 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Heat Output (Max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Flow Rate ΔT 35°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e12.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Temperature Range (High)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e35 – 82°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Temperature Range (Low \/ UFH)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e20 – 45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e36 – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eModulation Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e1:7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eMin DHW Flow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e2 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Pressure Min \/ Max\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e0.2 \/ 7.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBuilt-in Expansion Vessel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e8 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eNoise Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e51 dB \/ Band XL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eNOx Emissions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e51 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBoiler Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e31.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDimensions H × W × D\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e745 × 400 × 385 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eServicing Clearances — Top \/ Front \/ Bottom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e300 \/ 450 \/ 250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eServicing Clearances — Left \/ Right\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e5 \/ 5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eElectrical Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003eIPX5D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eGas Types Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003eNatural gas (G20) and LPG propane (G31) — LPG kit included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#008377CF;color:#fff;\"\u003e\u003ctd style=\"padding:8px 12px;font-weight:700;\" colspan=\"2\"\u003e100mm Vertical Flue Kit Specifications (3319235 + 3318079)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eFlue Terminal Part No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e3319235 — 100mm Black Terminal (Caravan \u0026amp; Leisure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eVertical Starter Part No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e3318079\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eFlue Pipe Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003eØ60\/100 mm coaxial (concentric exhaust \/ air intake)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTerminal Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e100 mm\u003c\/strong\u003e — fits existing Morco \u0026amp; Worcester Bosch legacy flashings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eTotal Flue Kit Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e1240 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eUsable Flue Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e575 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eMax Vertical Flue Run — 30 kW on Ø60\/100\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e7 metres total (see installation manual for elbow deductions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003ePush-fit with lip seal throughout — no clamps required on flue joints\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eStandard Domestic Equivalent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e3318080 (black, 125mm) \/ 3318081 (red, 125mm) — \u003cstrong\u003enot this kit\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e\u003cstrong\u003eRoof Flashing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eNot included — must suit existing 100mm penetration; standard Ariston domestic flashings are 125mm and will not seal on this terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin:28px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:6px 6px 0 0;font-weight:700;font-size:16px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eWhy is the maximum vertical flue run 7 metres on the 30 kW rather than 8 metres on the 24 kW?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eThe higher output of the 30 kW burner produces a slightly greater volume of combustion gases, which increases resistance in the flue system. Ariston's published maximum vertical run for the E-Combi ONE on Ø60\/100 is \u003cstrong\u003e8 metres at 24 kW and 7 metres at 30 kW\u003c\/strong\u003e. Each 90° elbow (3318075) deducts from these totals — refer to the installation manual for the specific deduction per fitting. If the installation requires more than 7 metres, upgrading to the \u003cstrong\u003eØ80\/125 coaxial system supports up to 24 metres\u003c\/strong\u003e on the 30 kW model, though this requires a different starter and larger roof penetration.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eShould I choose the 24 kW or 30 kW for my lodge or static caravan?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eThe key differentiator is \u003cstrong\u003ehot water demand\u003c\/strong\u003e. If your property has \u003cstrong\u003etwo bathrooms or two shower rooms\u003c\/strong\u003e, or if guests frequently use hot water simultaneously, the \u003cstrong\u003e30 kW (3301132)\u003c\/strong\u003e is the better choice — its 12.5 l\/min flow rate provides noticeably better shower performance under concurrent use than the 24 kW's 10.4 l\/min. For a \u003cstrong\u003esingle-bathroom caravan or smaller lodge with one wet room\u003c\/strong\u003e, the \u003cstrong\u003e24 kW (3301131)\u003c\/strong\u003e is adequate and may run more efficiently at part load since it modulates to a lower minimum output proportionally.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eDoes the 3319235 fit the same Morco and Worcester Bosch roof flashings regardless of boiler output?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eYes. The \u003cstrong\u003e3319235 flue kit is identical\u003c\/strong\u003e whether paired with the 24 kW or 30 kW boiler — the terminal diameter, total length, and push-fit connections are the same in both cases. The only difference between the two packs is the boiler body itself (3301131 vs 3301132). The flue fits the same \u003cstrong\u003e100mm legacy roof penetrations\u003c\/strong\u003e regardless of output.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eCan I extend the vertical run if the kit length isn't sufficient?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eYes. Standard Ariston \u003cstrong\u003eØ60\/100 coaxial extension pipes — 500mm (3318078) or 1000mm (3318077)\u003c\/strong\u003e — can be inserted between the vertical starter and the 3319235 terminal kit. Keep the total run within \u003cstrong\u003e7 metres for the 30 kW model\u003c\/strong\u003e and account for elbow deductions as specified in the installation manual. \u003cstrong\u003eDo not cut the 3319235 terminal kit itself\u003c\/strong\u003e — only extension pipes may be trimmed if required.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eDoes the boiler work on LPG for sites without mains gas?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eYes. An \u003cstrong\u003eLPG conversion kit is included as standard\u003c\/strong\u003e in the E-Combi ONE 30 kW box. The Gas Safe engineer carries out the conversion to propane (G31) at commissioning — no additional parts are needed. The boiler is then fully compatible with \u003cstrong\u003ebulk LPG tank or cylinder manifold supply\u003c\/strong\u003e as found on most commercial holiday parks.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eDoes the anti-frost protection cover the whole property?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eThe E-Combi ONE includes an \u003cstrong\u003eintegrated anti-frost device\u003c\/strong\u003e that activates the burner and pump automatically if the boiler's internal temperature drops to a critical level, protecting the boiler body itself. It does \u003cstrong\u003enot\u003c\/strong\u003e protect external pipework, the wider heating circuit, or unheated areas of the property. For holiday homes left unoccupied over winter, a full \u003cstrong\u003esystem drain-down\u003c\/strong\u003e or a separate site-wide frost strategy is still recommended alongside the boiler's built-in protection.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":64898840953181,"sku":"3301132-3319235-KIT","price":750.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonECombiONE24LPGCombiBoiler3301445withVerticalFlueKit.jpg?v=1780580349"},{"product_id":"ariston-e-combi-one-24kw-and-30kw-condensing-combi-gas-boiler-boiler-only-no-flue","title":"Ariston E-Combi ONE 24kW and 30kW Condensing Combi Gas Boiler – Boiler Only No Flue","description":"\u003c!-- SEO Product Name: Ariston E-Combi ONE 24kW and 30kW Condensing Combi Gas Boiler – Boiler Only No Flue --\u003e\n\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAriston E-Combi ONE Condensing Combi Gas Boiler\u003c\/strong\u003e is available in \u003cstrong\u003e24 kW (Part No. 3301131)\u003c\/strong\u003e and \u003cstrong\u003e30 kW (Part No. 3301132)\u003c\/strong\u003e outputs, supplied here as \u003cstrong\u003eboiler only — no flue kit included\u003c\/strong\u003e. This option is intended for \u003cstrong\u003ereplacement installations\u003c\/strong\u003e where the existing flue system is in serviceable condition and will be reused, or for \u003cstrong\u003enew builds where the flue is supplied and specified separately\u003c\/strong\u003e by the main contractor. Both models share Ariston's \u003cstrong\u003epatented XtraTech™ stainless steel heat exchanger\u003c\/strong\u003e, \u003cstrong\u003e94% seasonal efficiency\u003c\/strong\u003e, \u003cstrong\u003eA\/A ErP energy rating\u003c\/strong\u003e, and \u003cstrong\u003e1:7 modulation ratio\u003c\/strong\u003e. \u003cstrong\u003eLPG conversion kits and wall brackets are included as standard\u003c\/strong\u003e in both boxes. The E-Combi ONE range is compatible with Ariston's full HE Ø60\/100 and Ø80\/125 coaxial flue accessory range and with Ariston NET smart controls.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:22px 0;\"\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 130px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e94%\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eSeasonal Efficiency\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 130px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eA \/ A\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eErP Heating \/ DHW\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 130px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e1:7\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eModulation Ratio\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 130px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eNo Flue\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eBoiler Only\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 130px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eLPG Kit\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eIncluded as Standard\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 130px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e29.3 \/ 31.9 kg\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eWeight 24 kW \/ 30 kW\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#fdecea;border-left:4px solid #c0392b;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong\u003e⚠ Gas Safe Registered Installer Required:\u003c\/strong\u003e This boiler must be installed and commissioned by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with the Gas Safety (Installation and Use) Regulations 1998 and current Building Regulations. A compliant flue must be fitted — this listing does not include one.\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#fdecea;border-left:4px solid #c0392b;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong\u003e⚠ Flue Not Included — Must Be Ordered Separately:\u003c\/strong\u003e This boiler cannot operate without a correctly specified flue system. The E-Combi ONE uses the \u003cstrong\u003eAriston HE Ø60\/100 coaxial flue range\u003c\/strong\u003e. Standard options:\n  \u003cul style=\"margin:8px 0 0 0;padding-left:20px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHorizontal through-wall:\u003c\/strong\u003e 3318073 Horizontal Coaxial Kit (1000mm)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHorizontal + vertical option for installer:\u003c\/strong\u003e 3318074 Horizontal Kit + Vertical Starter bundle\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVertical domestic (125mm terminal):\u003c\/strong\u003e 3318079 Starter + 3318080 (black) or 3318081 (red) flue kit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVertical leisure\/caravan (100mm terminal):\u003c\/strong\u003e 3318079 Starter + 3319235 flue kit\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong\u003eℹ What's in the Box — Both Models:\u003c\/strong\u003e LPG conversion kit, wall mounting bracket, tap kit (filling loop), installation manual, and Benchmark commissioning checklist. No flue components are included.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin:24px 0;\"\u003e\n\n  \u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eXtraTech™ Stainless Steel Heat Exchanger\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eAriston's \u003cstrong\u003epatented single-coil XtraTech™ stainless steel heat exchanger\u003c\/strong\u003e uses \u003cstrong\u003ewider waterways\u003c\/strong\u003e than conventional copper alternatives to resist limescale build-up and improve thermal transfer over the boiler's service life. Performance independently certified by \u003cstrong\u003eTÜV Rheinland\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eAUTO Function — Intelligent Efficiency\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003eAUTO function\u003c\/strong\u003e continuously analyses system thermal behaviour and automatically adjusts boiler output and pump speed to match real demand — reducing short-cycling and preventing energy waste during mild weather, without requiring the householder to intervene.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e1:7 Modulation — Low Minimum Output\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eA \u003cstrong\u003e1:7 modulation ratio\u003c\/strong\u003e lets the boiler throttle back to approximately 3.1 kW (24 kW) or 4.3 kW (30 kW) minimum output. This avoids the short-cycling and associated heat exchanger stress that fixed-output boilers produce in well-insulated smaller properties.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eAriston NET Compatible\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eAlthough neither model includes built-in Wi-Fi, both are \u003cstrong\u003eAriston NET compatible\u003c\/strong\u003e. Adding the \u003cstrong\u003eCube S Net wired thermostat (3319126)\u003c\/strong\u003e or the \u003cstrong\u003eCube RF wireless controller\u003c\/strong\u003e enables full remote control and scheduling via the Ariston NET app without any hardware changes to the boiler.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008378;padding-bottom:6px;margin-bottom:10px;\"\u003eCompact \u0026amp; Lightweight — Easy Retrofit\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe 24 kW weighs just \u003cstrong\u003e29.3 kg at 315 mm deep\u003c\/strong\u003e; the 30 kW \u003cstrong\u003e31.9 kg at 385 mm deep\u003c\/strong\u003e. \u003cstrong\u003ePipework connections align with previous Ariston models\u003c\/strong\u003e, minimising re-routing time on like-for-like replacements where the existing flue is being retained.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-size:16px;font-weight:700;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eLPG Ready Out of the Box\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eAn \u003cstrong\u003eLPG conversion kit is included as standard\u003c\/strong\u003e in both models. The Gas Safe engineer converts to propane (G31) at commissioning with no additional parts. This makes both models equally suitable for off-grid and rural properties on bottled or bulk LPG.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"overflow-x:auto;margin:24px 0;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n  \u003ctr style=\"background:#008377CF;color:#fff;\"\u003e\n    \u003cth style=\"padding:10px 12px;text-align:left;\"\u003eParameter\u003c\/th\u003e\n    \u003cth style=\"padding:10px 12px;text-align:center;\"\u003eE-Combi ONE 24 kW\u003c\/th\u003e\n    \u003cth style=\"padding:10px 12px;text-align:center;\"\u003eE-Combi ONE 30 kW\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e3301131\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e3301132\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eErP Rating\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003eA \/ A (Heating \/ DHW)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSeasonal Space Heating Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e94%\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eSAP 2009\/2012 Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e89.4%\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Heat Output (Max)\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e22 kW\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e28 kW\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Heat Output (Max)\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e26 kW\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e30 kW\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Flow Rate ΔT 35°C\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e10.4 l\/min\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e12.5 l\/min\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Temperature Range (High)\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e35 – 82°C\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eCH Temperature Range (Low \/ UFH)\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e20 – 45°C\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e36 – 60°C\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eModulation Ratio\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e1:7\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDHW Pressure Min \/ Max\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e0.2 \/ 7.0 bar\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eBuilt-in Expansion Vessel\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e8 litres\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eNoise Level\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e49 dB \/ Band XL\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e51 dB \/ Band XL\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eNOx Emissions\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e53 mg\/kWh\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e51 mg\/kWh\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e29.3 kg\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e31.9 kg\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDimensions H × W × D\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e745 × 400 × 315 mm\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\"\u003e745 × 400 × 385 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eServicing Clearances T \/ F \/ Bo\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e300 \/ 450 \/ 250 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eServicing Clearances L \/ R\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e5 \/ 5 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eElectrical Supply\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003eIPX5D\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eGas Types\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;text-align:center;\" colspan=\"2\"\u003eNatural gas G20 and LPG propane G31 (conversion kit included)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;\"\u003e\u003cstrong\u003eMax Vertical Flue Run (Ø60\/100)\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;text-align:center;\"\u003e8 m\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;text-align:center;\"\u003e7 m\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin:28px 0;\"\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:6px 6px 0 0;font-weight:700;font-size:16px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eWhich flue kit do I need for the E-Combi ONE?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eThe E-Combi ONE uses the \u003cstrong\u003eAriston HE Ø60\/100 coaxial flue system\u003c\/strong\u003e. The standard horizontal kit is \u003cstrong\u003e3318073\u003c\/strong\u003e (1000mm); for vertical installations you need the \u003cstrong\u003e3318079 Vertical Starter\u003c\/strong\u003e plus one of: \u003cstrong\u003e3318080\u003c\/strong\u003e (125mm black terminal), \u003cstrong\u003e3318081\u003c\/strong\u003e (125mm red terminal), or \u003cstrong\u003e3319235\u003c\/strong\u003e (100mm leisure\/caravan terminal). The \u003cstrong\u003eSE flue accessories (3318003–3318006, 3319648)\u003c\/strong\u003e are \u003cstrong\u003enot compatible\u003c\/strong\u003e — these are for the Next Evo X water heater range only.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eCan I reuse my existing flue on a like-for-like swap?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eIn many cases yes — this is the primary reason to order the boiler only. If the existing flue uses the \u003cstrong\u003eAriston HE Ø60\/100 coaxial system\u003c\/strong\u003e, and the Gas Safe engineer inspects it as undamaged and correctly routed, it can typically be reused with the E-Combi ONE. If the previous boiler was a different brand or used a different flue diameter or type, a new flue must be specified and ordered separately.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eWhich output should I choose — 24 kW or 30 kW?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eThe practical difference is \u003cstrong\u003eDHW flow rate\u003c\/strong\u003e: 10.4 l\/min at 24 kW versus 12.5 l\/min at 30 kW. For a \u003cstrong\u003esingle-bathroom property with up to 10 radiators\u003c\/strong\u003e, the 24 kW is appropriate. For properties with \u003cstrong\u003etwo bathrooms or higher simultaneous hot water demand\u003c\/strong\u003e, the 30 kW is the better choice. A \u003cstrong\u003eheat loss calculation\u003c\/strong\u003e by the Gas Safe engineer is the only reliable method for confirming the correct output for a specific property.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eIs a Boiler Plus-compliant control required?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eYes. For new boiler installations in England, \u003cstrong\u003eBoiler Plus (Building Regulations Part L)\u003c\/strong\u003e requires a \u003cstrong\u003etime and temperature zone control\u003c\/strong\u003e plus at least one of: a weather or load compensator, smart thermostat with automation, or flue gas heat recovery. The E-Combi ONE does not include controls in the box — a compatible thermostat such as the \u003cstrong\u003eCube S Net (3319126)\u003c\/strong\u003e or \u003cstrong\u003eCube RF\u003c\/strong\u003e must be specified to satisfy Boiler Plus. Neither is included in this listing.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eDoes the boiler come with anything to fulfil the hot water circuit connection?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eYes — a \u003cstrong\u003etap kit (filling loop)\u003c\/strong\u003e and \u003cstrong\u003ewall mounting bracket\u003c\/strong\u003e are included in the box along with the LPG conversion kit. Compression fittings for the 22mm CH flow and return and 15mm gas inlet are required but not supplied — these are standard site materials.\u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"24kW","offer_id":65085129523549,"sku":"AR-3301131","price":635.0,"currency_code":"GBP","in_stock":true},{"title":"30kW","offer_id":65085129556317,"sku":"AR-3301132","price":650.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonE-CombiONE30LPGCombiBoiler.webp?v=1765306264"},{"product_id":"vaillant-ecotec-plus-424-lpg-erp-open-vent-boiler-c-w-horizontal-flue","title":"Vaillant ecoTEC Plus 424 LPG (ErP) Open Vent Boiler c\/w Horizontal Flue","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eVaillant ecoTEC Plus 424 LPG\u003c\/strong\u003e is a wall-hung, room-sealed condensing \u003cstrong\u003eopen vent (heat-only) boiler\u003c\/strong\u003e rated at 24kW, purpose-built for \u003cstrong\u003eLPG\u003c\/strong\u003e installations such as off-grid properties and static caravans, and supplied here complete with the \u003cstrong\u003eVaillant Standard Horizontal Flue Kit (0010039324)\u003c\/strong\u003e. Designed for traditional open-vented heating systems with a feed-and-expansion cistern, it pairs a \u003cstrong\u003ehigh-specification aluminium heat exchanger\u003c\/strong\u003e with electronic self-setting gas and air modulation for precise, low-emission combustion. At just \u003cstrong\u003e602 x 375 x 316mm\u003c\/strong\u003e, it is one of the most compact open vent boilers Vaillant produces, making it a practical drop-in replacement for older LPG gravity or pumped systems.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e8.0 – 25.7kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eModulation Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003eA\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Rating (Heating)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e2 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eGuarantee (Standard)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e23.8kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eLift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration \u0026amp; LPG Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis is an \u003cstrong\u003eLPG-specific\u003c\/strong\u003e boiler and must only be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e holding the relevant LPG qualification (e.g. CCLP1). It must not be connected to a natural gas supply. The horizontal flue terminal must be positioned in accordance with the clearances in the manufacturer's flue installation instructions, and a Benchmark commissioning checklist must be completed and left with the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eOpen Vent System — Check Compatibility Before Ordering\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis is an \u003cstrong\u003eopen vent (heat-only) boiler\u003c\/strong\u003e, not a combi or sealed system boiler. It is designed to work with an existing open-vented heating system incorporating a feed-and-expansion cistern in the loft, and a separate hot water cylinder. It does not supply domestic hot water directly and does not include a pump, cylinder, or expansion vessel. Confirm your system type before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Bundle\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePurpose-Built for LPG\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eFactory-configured for \u003cstrong\u003eliquefied petroleum gas\u003c\/strong\u003e rather than field-converted, this model is the correct specification for off-gas-grid properties, rural conversions, and static caravan installations running on LPG.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eAluminium Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA \u003cstrong\u003ehigh-specification aluminium heat exchanger\u003c\/strong\u003e is designed for a longer service life, easier maintenance access, and reduced running costs across the boiler's working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eElectronic Self-Setting Combustion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe \u003cstrong\u003eelectronic gas and air modulation system\u003c\/strong\u003e automatically fine-tunes the air-to-gas ratio as the burner modulates, improving combustion efficiency and cutting emissions without manual recommissioning.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eWide 1:5 Modulation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eNominal output modulates from as low as 8.0kW up to 25.7kW, letting the boiler match output closely to demand rather than cycling on and off at full power.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact Footprint\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 602 x 375 x 316mm, the ecoTEC Plus 424 is small enough for kitchen cupboard installation, easing replacement of older, bulkier open vent boilers in tight spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePush-Fit 60\/100 Horizontal Flue Included\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe bundled 0010039324 flue kit uses tool-free push-fit joints and is compatible with the wider Vaillant 60\/100 extension, elbow and plume management accessory range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0020231355\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue kit article number\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0010039324 (60\/100mm, 990mm length)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing open vent (heat-only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGas type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eLPG (propane, G31) — factory set, not field-convertible from natural gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e602 x 375 x 316 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e2 years standard; upgradeable to 5 years via Vaillant Advance, 10 years with Boiler Protection Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (50\/30°C, condensing)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8.0 – 25.7 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (80\/60°C, non-condensing)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e7.6 – 24.3 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum flow temperature\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlow temperature range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10 – 80°C (75°C factory setting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eApproximate condensate volume (50\/30°C)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.06 litres\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency (Heating)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e94% \/ A rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx emissions (EN 15502-2-1)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e35 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSound power (ErP)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e49 dBa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler lift weight (dry)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e23.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue \u0026amp; Clearances\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum horizontal flue length (60\/100)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0.7 m (LPG-specific limit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum clearance, sides\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum clearance, top (60\/100 flue)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e150 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum clearance, below\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e150 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum clearance, front\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e600 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs this the same boiler as the natural gas ecoTEC Plus 424?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. This is a dedicated LPG variant (article 0020231355), factory set for propane (G31) operation. It carries a different article number to the natural gas ecoTEC Plus 424 (0010021223) and must not be run on natural gas without a manufacturer-approved conversion.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this boiler supply hot water?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. This is an open vent heat-only boiler for central heating. Domestic hot water is provided by a separate hot water cylinder connected to the same open-vented system, not by the boiler itself.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhy is the maximum horizontal flue length so much shorter than the natural gas version?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eVaillant's technical data sheet specifies a maximum horizontal 60\/100 flue length of 0.7m for the LPG variant of the ecoTEC Plus 424, considerably shorter than the 10m permitted on the equivalent natural gas model. Plan the flue route accordingly before ordering extensions.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat system components do I need in addition to this bundle?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAs an open vent boiler, you will also need a feed-and-expansion cistern, open vent and cold feed pipework, a separate pump if not integral, and a hot water cylinder — none of which are included in this listing.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs the horizontal flue kit long enough for my installation?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe bundled 0010039324 kit provides a 990mm physical length, but the maximum permitted total flue run on this LPG model is only 0.7m including elbows — check your wall thickness and termination position carefully before ordering additional extensions.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":65136195961181,"sku":"20231355","price":1895.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/VaillantecoTECPlus424LPGErPOpenVentBoilercwHorizontalFlue.jpg?v=1783059629"},{"product_id":"glow-worm-compact-28c-lpg-combi-boiler-vertical-flue-adaptor-and-system-filter","title":"Glow-worm Compact 28C LPG Combi Boiler, Vertical Flue, Adaptor and System Filter","description":"\u003c!-- SEO Product Name: Glow-worm Compact 28C LPG Combi Boiler, Vertical Flue, Adaptor and System Filter --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eGlow-worm Compact 28C LPG\u003c\/strong\u003e is a wall-hung, room-sealed condensing \u003cstrong\u003ecombi boiler\u003c\/strong\u003e rated at 28kW, factory-configured for \u003cstrong\u003eLPG\u003c\/strong\u003e and built in the UK at Glow-worm's Belper factory. This listing bundles the boiler with the \u003cstrong\u003eGlow-worm Vertical Flue Kit (20230604)\u003c\/strong\u003e together with the required \u003cstrong\u003eVertical Flue Adaptor (10031029)\u003c\/strong\u003e, for roof termination installations, and the \u003cstrong\u003eGlow-worm Power System Filter (10035820)\u003c\/strong\u003e to protect the heat exchanger from circulating debris. One of the smallest and lightest boilers in the Glow-worm range at just \u003cstrong\u003e626 x 400 x 270mm\u003c\/strong\u003e, the Compact 28C suits tight airing cupboard or kitchen cupboard installations without compromising on output.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e28kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCombi Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e7.7 – 25.9 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCH Output Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003eNOx 6\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNOx Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e5 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e26.5 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNet Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration \u0026amp; LPG Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis is an \u003cstrong\u003eLPG-specific\u003c\/strong\u003e boiler (gas category II2H3P) and must only be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e holding the relevant LPG qualification. It must not be connected to a natural gas supply. The flue must be positioned in accordance with the clearances in the manufacturer's installation instructions, and a Benchmark commissioning checklist must be completed and left with the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eBundle Contents \u0026amp; Compatibility\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis listing supplies three separate boxed items designed to be installed together: the \u003cstrong\u003eCompact 28C LPG boiler\u003c\/strong\u003e (article 0010040108), the \u003cstrong\u003eGlow-worm Vertical Flue Kit (0020230604) with Vertical Flue Adaptor (0010031029)\u003c\/strong\u003e, and the \u003cstrong\u003ePower System Filter (10035820)\u003c\/strong\u003e. The vertical flue kit requires the separate adaptor (10031029) to terminate correctly through a pitched or flat roof — both are included in this bundle.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Bundle\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePurpose-Built for LPG\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eFactory-configured for \u003cstrong\u003eliquefied petroleum gas (G31)\u003c\/strong\u003e rather than field-converted, making this the correct specification for off-gas-grid properties and static caravan installations running on LPG.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 26.5 kg net and 626 x 400 x 270mm, the Compact 28C is one of the smallest and lightest boilers Glow-worm produces, easing installation in restricted spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHigh-Efficiency Modulating Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA modulating pump adapts its output to actual heating and hot water demand rather than running at a fixed speed, lowering electricity consumption and running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eQuiet Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eBuilt around a heat exchanger engineered for low operating noise, keeping the boiler unobtrusive in kitchen or hallway cupboard installations close to living space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eUK-Built Quality\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eManufactured at Glow-worm's award-winning factory in Belper, Derbyshire, alongside the wider Vaillant Group boiler range with which it shares core componentry.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eVertical Flue, Adaptor Included\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis bundle supplies the correct Glow-worm-approved flue components for a roof termination, removing the guesswork of matching third-party flue accessories to the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0010040108\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue kit article number(s)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e20230604 + 10031029\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSystem filter article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10035820\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing combi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGas category\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eII2H3P (LPG, G31) — factory set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e626 x 400 x 270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (50\/30°C, condensing)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e7.7 – 25.9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (75\/55°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6.9 – 23.9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum flow temperature\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlow temperature adjustment range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e30 – 75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum operating pressure (heating)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 30K)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e13.4 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 35K)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e11.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum water flow\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e1.7 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW output temperature range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e35 – 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eRecommended supply pressure\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e92%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx class\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNet weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e26.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eIP rating\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eIPX5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003ePermitted installation types\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eC13, C33, C43, C53\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this listing include the boiler, flue, and filter, or do I need to buy them separately?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAll items are included in this single listing: the Compact 28C LPG boiler (0010040108), the vertical flue, adaptor kit, and the Power System Filter (10035820).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs this boiler suitable for a natural gas supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. This is a dedicated LPG variant, factory set for propane (G31) operation and carries a different article number to the equivalent natural gas Compact model. It must not be run on natural gas.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhy is a system filter included with the boiler?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Power System Filter (10035820) protects the boiler's heat exchanger and internal components from debris and sludge circulating in the heating system, helping protect the guarantee and long-term reliability.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I use this boiler with a static caravan installation?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Compact LPG range is commonly specified for static caravans and off-gas-grid properties; confirm compliance with the current edition of the relevant caravan and residential park installation standards with your Gas Safe engineer before installation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat size property is the Compact 28C suitable for?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eWith a central heating output range of 7.7 – 25.9 kW, the Compact 28C is best suited to properties with up to 12 radiators, 1–2 bathrooms, subject to a proper heat loss calculation.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Glow-Worm","offers":[{"title":"Default Title","offer_id":65136318972253,"sku":"10040108-04-29-20","price":997.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Glow-wormCompactLPGCombiBoiler_VerticalFlue_AdaptorandSystemFilter.jpg?v=1783060770"},{"product_id":"glow-worm-compact-24c-lpg-combi-boiler-vertical-flue-adaptor-and-system-filter","title":"Glow-worm Compact 24C LPG Combi Boiler, Vertical Flue, Adaptor and System Filter","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eGlow-worm Compact 24C LPG\u003c\/strong\u003e is a wall-hung, room-sealed condensing \u003cstrong\u003ecombi boiler\u003c\/strong\u003e rated at 24kW, factory-configured for \u003cstrong\u003eLPG\u003c\/strong\u003e and built in the UK at Glow-worm's Belper factory. This listing bundles the boiler with the \u003cstrong\u003eGlow-worm Vertical Flue Kit (20230604)\u003c\/strong\u003e together with the required \u003cstrong\u003eVertical Flue Adaptor (10031029)\u003c\/strong\u003e, for roof termination installations, and the \u003cstrong\u003eGlow-worm Power System Filter (10035820)\u003c\/strong\u003e to protect the heat exchanger from circulating debris. One of the smallest and lightest boilers in the Glow-worm range at just \u003cstrong\u003e626 x 400 x 270mm\u003c\/strong\u003e, the Compact 24C suits tight airing cupboard or kitchen cupboard installations without compromising on output.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCombi Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e9.0 – 20.0 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCH Output Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003eNOx 6\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNOx Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e5 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e25.6 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNet Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration \u0026amp; LPG Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis is an \u003cstrong\u003eLPG-specific\u003c\/strong\u003e boiler (gas category II2H3P) and must only be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e holding the relevant LPG qualification. It must not be connected to a natural gas supply. The flue must be positioned in accordance with the clearances in the manufacturer's installation instructions, and a Benchmark commissioning checklist must be completed and left with the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eBundle Contents \u0026amp; Compatibility\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis listing supplies three separate boxed items designed to be installed together: the \u003cstrong\u003eCompact 24C LPG boiler\u003c\/strong\u003e (article 0010040107), the \u003cstrong\u003eGlow-worm Vertical Flue Kit (0020230604) with Vertical Flue Adaptor (0010031029)\u003c\/strong\u003e, and the \u003cstrong\u003ePower System Filter (10035820)\u003c\/strong\u003e. The vertical flue kit requires the separate adaptor (10031029) to terminate correctly through a pitched or flat roof — both are included in this bundle.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Bundle\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePurpose-Built for LPG\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eFactory-configured for \u003cstrong\u003eliquefied petroleum gas (G31)\u003c\/strong\u003e rather than field-converted, making this the correct specification for off-gas-grid properties and static caravan installations running on LPG.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 25.6 kg net and 626 x 400 x 270mm, the Compact 24C is one of the smallest and lightest boilers Glow-worm produces, easing installation in restricted spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHigh-Efficiency Modulating Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA modulating pump adapts its output to actual heating and hot water demand rather than running at a fixed speed, lowering electricity consumption and running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eQuiet Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eBuilt around a heat exchanger engineered for low operating noise, keeping the boiler unobtrusive in kitchen or hallway cupboard installations close to living space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eUK-Built Quality\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eManufactured at Glow-worm's award-winning factory in Belper, Derbyshire, alongside the wider Vaillant Group boiler range with which it shares core componentry.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eVertical Flue, Adaptor Included\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis bundle supplies the correct Glow-worm-approved flue components for a roof termination, removing the guesswork of matching third-party flue accessories to the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0010040107\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue kit article number(s)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e20230604 + 10031029\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSystem filter article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10035820\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing combi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGas category\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eII2H3P (LPG, G31) — factory set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e626 x 400 x 270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (50\/30°C, condensing)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9.0 – 20.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (75\/55°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8.1 – 18.3 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum flow temperature\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlow temperature adjustment range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e30 – 75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum operating pressure (heating)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 30K)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e11.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 35K)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9.9 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum water flow\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e1.7 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW output temperature range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e35 – 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eRecommended supply pressure\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e92%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx class\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNet weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e25.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eIP rating\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eIPX5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003ePermitted installation types\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eC13, C33, C43, C53\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this listing include the boiler, flue, and filter, or do I need to buy them separately?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAll items are included in this single listing: the Compact 24C LPG boiler (0010040107), the vertical flue, adaptor kit, and the Power System Filter (10035820).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs this boiler suitable for a natural gas supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. This is a dedicated LPG variant, factory set for propane (G31) operation and carries a different article number to the equivalent natural gas Compact model. It must not be run on natural gas.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhy is a system filter included with the boiler?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Power System Filter (10035820) protects the boiler's heat exchanger and internal components from debris and sludge circulating in the heating system, helping protect the guarantee and long-term reliability.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I use this boiler with a static caravan installation?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Compact LPG range is commonly specified for static caravans and off-gas-grid properties; confirm compliance with the current edition of the relevant caravan and residential park installation standards with your Gas Safe engineer before installation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat size property is the Compact 24C suitable for?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eWith a central heating output range of 9.0 – 20.0 kW, the Compact 24C is best suited to properties with up to 10 radiators, 1 bathroom, subject to a proper heat loss calculation.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Glow-Worm","offers":[{"title":"Default Title","offer_id":65136366059869,"sku":"10040107-04-29-20","price":950.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Glow-wormCompactLPGCombiBoiler_VerticalFlue_AdaptorandSystemFilter.jpg?v=1783060770"},{"product_id":"glow-worm-compact-28c-lpg-combi-boiler-horizontal-flue-and-system-filter","title":"Glow-worm Compact 28C LPG Combi Boiler, Horizontal Flue and System Filter","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eGlow-worm Compact 28C LPG\u003c\/strong\u003e is a wall-hung, room-sealed condensing \u003cstrong\u003ecombi boiler\u003c\/strong\u003e rated at 28kW, factory-configured for \u003cstrong\u003eLPG\u003c\/strong\u003e and built in the UK at Glow-worm's Belper factory. This listing bundles the boiler with the \u003cstrong\u003eGlow-worm Standard Horizontal Flue Kit (10031041)\u003c\/strong\u003e, a 60\/100mm concentric push-fit kit for standard wall termination, and the \u003cstrong\u003eGlow-worm Power System Filter (10035820)\u003c\/strong\u003e to protect the heat exchanger from circulating debris. One of the smallest and lightest boilers in the Glow-worm range at just \u003cstrong\u003e626 x 400 x 270mm\u003c\/strong\u003e, the Compact 28C suits tight airing cupboard or kitchen cupboard installations without compromising on output.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e28kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCombi Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e7.7 – 25.9 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCH Output Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003eNOx 6\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNOx Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e5 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e26.5 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNet Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration \u0026amp; LPG Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis is an \u003cstrong\u003eLPG-specific\u003c\/strong\u003e boiler (gas category II2H3P) and must only be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e holding the relevant LPG qualification. It must not be connected to a natural gas supply. The flue must be positioned in accordance with the clearances in the manufacturer's installation instructions, and a Benchmark commissioning checklist must be completed and left with the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eBundle Contents \u0026amp; Compatibility\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis listing supplies three separate boxed items designed to be installed together: the \u003cstrong\u003eCompact 28C LPG boiler\u003c\/strong\u003e (article 0010040108), the \u003cstrong\u003eGlow-worm Standard Horizontal Flue Kit (0010031041)\u003c\/strong\u003e, and the \u003cstrong\u003ePower System Filter (10035820)\u003c\/strong\u003e. The horizontal kit is suitable for standard 60\/100mm through-wall termination only.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Bundle\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePurpose-Built for LPG\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eFactory-configured for \u003cstrong\u003eliquefied petroleum gas (G31)\u003c\/strong\u003e rather than field-converted, making this the correct specification for off-gas-grid properties and static caravan installations running on LPG.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 26.5 kg net and 626 x 400 x 270mm, the Compact 28C is one of the smallest and lightest boilers Glow-worm produces, easing installation in restricted spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHigh-Efficiency Modulating Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA modulating pump adapts its output to actual heating and hot water demand rather than running at a fixed speed, lowering electricity consumption and running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eQuiet Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eBuilt around a heat exchanger engineered for low operating noise, keeping the boiler unobtrusive in kitchen or hallway cupboard installations close to living space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eUK-Built Quality\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eManufactured at Glow-worm's award-winning factory in Belper, Derbyshire, alongside the wider Vaillant Group boiler range with which it shares core componentry.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHorizontal Flue Included\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis bundle supplies the correct Glow-worm-approved flue components for a through-wall termination, removing the guesswork of matching third-party flue accessories to the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0010040108\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue kit article number(s)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10031041\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSystem filter article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10035820\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing combi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGas category\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eII2H3P (LPG, G31) — factory set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e626 x 400 x 270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (50\/30°C, condensing)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e7.7 – 25.9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (75\/55°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6.9 – 23.9 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum flow temperature\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlow temperature adjustment range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e30 – 75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum operating pressure (heating)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 30K)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e13.4 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 35K)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e11.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum water flow\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e1.7 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW output temperature range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e35 – 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eRecommended supply pressure\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e92%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx class\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNet weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e26.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eIP rating\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eIPX5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003ePermitted installation types\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eC13, C33, C43, C53\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this listing include the boiler, flue, and filter, or do I need to buy them separately?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAll items are included in this single listing: the Compact 28C LPG boiler (0010040108), the horizontal flue kit, and the Power System Filter (10035820).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs this boiler suitable for a natural gas supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. This is a dedicated LPG variant, factory set for propane (G31) operation and carries a different article number to the equivalent natural gas Compact model. It must not be run on natural gas.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhy is a system filter included with the boiler?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Power System Filter (10035820) protects the boiler's heat exchanger and internal components from debris and sludge circulating in the heating system, helping protect the guarantee and long-term reliability.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I use this boiler with a static caravan installation?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Compact LPG range is commonly specified for static caravans and off-gas-grid properties; confirm compliance with the current edition of the relevant caravan and residential park installation standards with your Gas Safe engineer before installation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat size property is the Compact 28C suitable for?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eWith a central heating output range of 7.7 – 25.9 kW, the Compact 28C is best suited to properties with up to 12 radiators, 1–2 bathrooms, subject to a proper heat loss calculation.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Glow-Worm","offers":[{"title":"Default Title","offer_id":65136375431517,"sku":"10040108-41-20","price":970.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Glow-wormCompactLPGCombiBoilerHorizontalFlueandSystemFilter.jpg?v=1783061361"},{"product_id":"glow-worm-compact-24c-lpg-combi-boiler-horizontal-flue-and-system-filter","title":"Glow-worm Compact 24C LPG Combi Boiler, Horizontal Flue and System Filter","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eGlow-worm Compact 24C LPG\u003c\/strong\u003e is a wall-hung, room-sealed condensing \u003cstrong\u003ecombi boiler\u003c\/strong\u003e rated at 24kW, factory-configured for \u003cstrong\u003eLPG\u003c\/strong\u003e and built in the UK at Glow-worm's Belper factory. This listing bundles the boiler with the \u003cstrong\u003eGlow-worm Standard Horizontal Flue Kit (10031041)\u003c\/strong\u003e, a 60\/100mm concentric push-fit kit for standard wall termination, and the \u003cstrong\u003eGlow-worm Power System Filter (10035820)\u003c\/strong\u003e to protect the heat exchanger from circulating debris. One of the smallest and lightest boilers in the Glow-worm range at just \u003cstrong\u003e626 x 400 x 270mm\u003c\/strong\u003e, the Compact 24C suits tight airing cupboard or kitchen cupboard installations without compromising on output.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCombi Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e9.0 – 20.0 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCH Output Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003eNOx 6\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNOx Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e5 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Guarantee\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e25.6 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNet Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration \u0026amp; LPG Installation Requirements\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis is an \u003cstrong\u003eLPG-specific\u003c\/strong\u003e boiler (gas category II2H3P) and must only be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e holding the relevant LPG qualification. It must not be connected to a natural gas supply. The flue must be positioned in accordance with the clearances in the manufacturer's installation instructions, and a Benchmark commissioning checklist must be completed and left with the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eBundle Contents \u0026amp; Compatibility\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis listing supplies three separate boxed items designed to be installed together: the \u003cstrong\u003eCompact 24C LPG boiler\u003c\/strong\u003e (article 0010040107), the \u003cstrong\u003eGlow-worm Standard Horizontal Flue Kit (0010031041)\u003c\/strong\u003e, and the \u003cstrong\u003ePower System Filter (10035820)\u003c\/strong\u003e. The horizontal kit is suitable for standard 60\/100mm through-wall termination only.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Bundle\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePurpose-Built for LPG\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eFactory-configured for \u003cstrong\u003eliquefied petroleum gas (G31)\u003c\/strong\u003e rather than field-converted, making this the correct specification for off-gas-grid properties and static caravan installations running on LPG.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 25.6 kg net and 626 x 400 x 270mm, the Compact 24C is one of the smallest and lightest boilers Glow-worm produces, easing installation in restricted spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHigh-Efficiency Modulating Pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA modulating pump adapts its output to actual heating and hot water demand rather than running at a fixed speed, lowering electricity consumption and running costs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eQuiet Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eBuilt around a heat exchanger engineered for low operating noise, keeping the boiler unobtrusive in kitchen or hallway cupboard installations close to living space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eUK-Built Quality\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eManufactured at Glow-worm's award-winning factory in Belper, Derbyshire, alongside the wider Vaillant Group boiler range with which it shares core componentry.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHorizontal Flue Included\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis bundle supplies the correct Glow-worm-approved flue components for a through-wall termination, removing the guesswork of matching third-party flue accessories to the boiler.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0010040107\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue kit article number(s)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10031041\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSystem filter article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10035820\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing combi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGas category\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eII2H3P (LPG, G31) — factory set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e626 x 400 x 270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (50\/30°C, condensing)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9.0 – 20.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNominal heat output range (75\/55°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8.1 – 18.3 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum flow temperature\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlow temperature adjustment range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e30 – 75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaximum operating pressure (heating)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 30K)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e11.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSpecific flow rate D (ΔT = 35K)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9.9 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMinimum water flow\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e1.7 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW output temperature range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e35 – 55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eRecommended supply pressure\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e92%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx class\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNet weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e25.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eIP rating\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eIPX5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003ePermitted installation types\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eC13, C33, C43, C53\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical flue length (60\/100mm, incl. 1 elbow)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this listing include the boiler, flue, and filter, or do I need to buy them separately?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAll items are included in this single listing: the Compact 24C LPG boiler (0010040107), the horizontal flue kit, and the Power System Filter (10035820).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs this boiler suitable for a natural gas supply?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. This is a dedicated LPG variant, factory set for propane (G31) operation and carries a different article number to the equivalent natural gas Compact model. It must not be run on natural gas.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhy is a system filter included with the boiler?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Power System Filter (10035820) protects the boiler's heat exchanger and internal components from debris and sludge circulating in the heating system, helping protect the guarantee and long-term reliability.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I use this boiler with a static caravan installation?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Compact LPG range is commonly specified for static caravans and off-gas-grid properties; confirm compliance with the current edition of the relevant caravan and residential park installation standards with your Gas Safe engineer before installation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat size property is the Compact 24C suitable for?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eWith a central heating output range of 9.0 – 20.0 kW, the Compact 24C is best suited to properties with up to 10 radiators, 1 bathroom, subject to a proper heat loss calculation.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Glow-Worm","offers":[{"title":"Default Title","offer_id":65136391913821,"sku":"10040107-41-20","price":933.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Glow-wormCompactLPGCombiBoilerHorizontalFlueandSystemFilter.jpg?v=1783061361"},{"product_id":"navien-ncb300-28kw-combi-boiler-std-flue-adey-micro-1-filter","title":"Navien NCB300 28kW Combi Boiler, Std Flue \u0026 Adey Micro 1 Filter","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eNavien NCB300-28K\u003c\/strong\u003e is a wall-hung, room-sealed \u003cstrong\u003egas condensing combi boiler\u003c\/strong\u003e rated at 28kW, supplied here complete with the \u003cstrong\u003eNavien 1000mm Standard Horizontal Flue Kit (GXXX002208)\u003c\/strong\u003e and an \u003cstrong\u003eAdey MagnaClean Micro 1 Filter (FL1-03-07129)\u003c\/strong\u003e. Navien's entry-level combi model shares its core componentry with the larger NCB300\/500\/700 range, including \u003cstrong\u003edual stainless steel heat exchangers\u003c\/strong\u003e for long-term durability and a \u003cstrong\u003e6:1 turndown ratio\u003c\/strong\u003e for smooth modulation. The bundled Adey filter protects the boiler's heat exchangers from circulating magnetite and debris from day one, supporting the boiler's \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e28kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency (A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e11.5 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Flow (ΔT35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e6:1\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e5 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e29kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eLift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eInstallation, commissioning and servicing of this boiler must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. The horizontal flue must be positioned in accordance with the clearances set out in the manufacturer's installation and operation manual, and a Benchmark commissioning checklist must be completed and left with the end user.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eBundle Contents \u0026amp; LPG Conversion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis listing supplies three separate boxed items designed to be installed together: the \u003cstrong\u003eNCB300-28K boiler\u003c\/strong\u003e (PNCB3000028L001), the \u003cstrong\u003e1000mm Standard Horizontal Flue Kit\u003c\/strong\u003e (GXXX002208), and the \u003cstrong\u003eAdey MagnaClean Micro 1 Filter\u003c\/strong\u003e (FL1-03-07129, 22mm compression). The boiler is shipped ready to fire on natural gas; an \u003cstrong\u003eLPG conversion kit is included in the boiler packaging\u003c\/strong\u003e for field conversion by a suitably qualified Gas Safe engineer, but is not fitted as standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Bundle\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eDual Stainless Steel Heat Exchangers\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe primary and secondary heat exchangers are both \u003cstrong\u003estainless steel\u003c\/strong\u003e rather than aluminium, giving strong resistance to corrosion from acidic condensate and supporting long-term reliability over the boiler's working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003e6:1 Turndown Ratio\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA wide \u003cstrong\u003e6:1 modulation range\u003c\/strong\u003e lets the burner idle down to a low minimum output on milder days, avoiding the short-cycling that wastes gas and wears components faster on boilers with a narrower turndown.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHydrogen-Ready (20% Blend)\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe NCB300 is tested and approved for use with up to a \u003cstrong\u003e20% hydrogen blend\u003c\/strong\u003e in the gas supply, helping future-proof the installation against the anticipated transition of the UK gas network.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eErP A+ with Smart Plus\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003ePaired with a Navien Smart Plus wireless thermostat, the system efficiency rating rises from \u003cstrong\u003eErP A (93%) to ErP A+ (98%)\u003c\/strong\u003e, thanks to weather forecasting and location-based heating adjustments.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eAdey Micro 1 Filter Included\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe bundled \u003cstrong\u003eAdey MagnaClean Micro 1\u003c\/strong\u003e is a compact 22mm in-line magnetic filter with 360° rotational valves for flexible installation, and full vent, drain and flush capability for straightforward servicing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 395 x 285 x 680mm and 29kg lift weight, the NCB300 is built for easy cupboard-fit installation in smaller properties, without sacrificing DHW performance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003ePNCB3000028L001 (NCB300-28K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue kit article number\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eGXXX002208 (1000mm Standard Horizontal Flue Kit, 60\/100mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFilter article number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eFL1-03-07129 (Adey MagnaClean Micro 1, 22mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing combi (B23-C13-C33-C53-C83)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFuel type\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eNatural gas (LPG conversion kit included, field conversion required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e395 x 285 x 680 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat input range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.3 – 24.7 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat output range (80\/60°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.2 – 24.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eModulation (max\/min)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW heat input \/ output range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.3 – 28.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 25°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e16.0 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 35°C)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e11.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate, kitchen tap (ΔT = 45°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9.0 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW turndown ratio\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e7:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eA (93%) — A+ (98%) with Smart Plus control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx classification\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eClass 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eIP rating\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eIPX4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eSound level\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e52 dBA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eLift weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e29 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue diameter\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eCoaxial 60\/100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBundled flue kit length\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e1000mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this listing include the boiler, flue, and filter, or do I need to buy them separately?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAll three items are included in this single listing: the NCB300-28K boiler (PNCB3000028L001), the GXXX002208 1000mm horizontal flue kit, and the FL1-03-07129 Adey MagnaClean Micro 1 filter.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I run this boiler on LPG?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAn LPG conversion kit is included in the boiler's packaging as standard, but the boiler ships configured for natural gas. Conversion to LPG must be carried out by a Gas Safe registered engineer holding the appropriate LPG qualification, following the procedure in the service manual.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhy is a magnetic filter included with the boiler?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Adey MagnaClean Micro 1 protects the boiler's stainless steel heat exchangers from circulating magnetite and debris in the heating system, reducing the risk of blockages and helping protect the manufacturer's warranty.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs the 1000mm flue kit long enough for my installation?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe bundled kit provides a 1000mm length, suitable for a standard through-wall termination. Runs up to the 8m maximum horizontal length require additional Navien 60\/100 extension and bend accessories, sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat is ErP A+ with Smart Plus, and is it included?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThe Smart Plus wireless thermostat and WiFi receiver are sold separately and are not included in this bundle. Pairing one with this boiler raises the system's ErP rating from A (93%) to A+ (98%).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":65137154621789,"sku":"PNCB3000028L001-G2208-FL129","price":670.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienNCB30028kWCombiBoiler_StdFlue_AdeyMicro1Filter.jpg?v=1783064167"},{"product_id":"navien-ncb300-28kw-combi-boiler","title":"Navien NCB300 28kW Combi Boiler","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eNavien NCB300-28K\u003c\/strong\u003e is a wall-hung, room-sealed gas condensing \u003cstrong\u003ecombi boiler\u003c\/strong\u003e rated at 28kW, Navien's entry model offering the same core componentry as the larger NCB500\/700 ranges in a compact, cupboard-friendly design. Built around \u003cstrong\u003edual stainless steel heat exchangers\u003c\/strong\u003e, it combines a wide \u003cstrong\u003e6:1 turndown ratio\u003c\/strong\u003e with a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e as standard, making it well suited to one shower.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e28kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency (A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e11.5 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Flow (ΔT35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e6:1\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e5 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e29kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eLift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eInstallation, commissioning and servicing of this boiler must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. A Benchmark commissioning checklist must be completed and left with the end user, and the flue must be positioned in accordance with the clearances set out in the manufacturer's installation and operation manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eLPG Conversion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe boiler is shipped ready to fire on natural gas. An \u003cstrong\u003eLPG conversion kit is included in the boiler packaging\u003c\/strong\u003e for field conversion by a suitably qualified Gas Safe engineer, but is not fitted as standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Boiler\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eDual Stainless Steel Heat Exchangers\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eBoth the primary and secondary heat exchangers are \u003cstrong\u003estainless steel\u003c\/strong\u003e rather than aluminium, giving strong resistance to corrosion from acidic condensate over the boiler's working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003e6:1 Turndown Ratio\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA wide \u003cstrong\u003e6:1 modulation range\u003c\/strong\u003e lets the burner idle down to a low minimum output on milder days, avoiding the short-cycling that wears components faster on boilers with a narrower turndown.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHydrogen-Ready (20% Blend)\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe NCB300 is tested and approved for use with up to a \u003cstrong\u003e20% hydrogen blend\u003c\/strong\u003e in the gas supply, helping future-proof the installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eErP A+ with Smart Plus\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003ePaired with a Navien Smart Plus wireless thermostat, system efficiency rises from \u003cstrong\u003eErP A (93%) to ErP A+ (98%)\u003c\/strong\u003e, thanks to weather forecasting and geofencing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 395 x 285 x 680mm and 29kg lift weight, the NCB300 is built for easy cupboard-fit installation without sacrificing DHW performance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eSmartphone Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003ePairs with the Navien Smart Plus app for remote adjustment of heating and hot water, alongside smart weather forecasting and geofencing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eArticle number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003ePNCB3000028L001 (NCB300-28K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing combi (B23-C13-C33-C53-C83)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFuel type\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eNatural gas (LPG conversion kit included, field conversion required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e395 x 285 x 680 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eShower rating\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eOne shower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat input range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.3 – 24.7 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat output range (80\/60°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.2 – 24.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eModulation (max\/min)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW heat input \/ output range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.3 – 28.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 25°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e16.0 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 35°C)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e11.5 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate, kitchen tap (ΔT = 45°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e9.0 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW turndown ratio\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e7:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eA (93%) — A+ (98%) with Smart Plus control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx classification\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eClass 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eLift weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e29 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue diameter\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eCoaxial 60\/100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I run this boiler on LPG?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAn LPG conversion kit is included in the boiler's packaging as standard, but the boiler ships configured for natural gas. Conversion must be carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat size property is the NCB300-28K suitable for?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eWith a DHW output of 28kW, the NCB300-28K is designed for one shower, subject to a proper heat loss calculation and mains flow rate check.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this boiler include a flue kit?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo, this listing is for the boiler only. A compatible Navien 60\/100mm flue kit is required and sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWill this boiler improve its efficiency rating with a smart thermostat?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eYes. Pairing a Navien Smart Plus wireless thermostat with this boiler raises the system's ErP rating from A (93%) to A+ (98%).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":65140795179357,"sku":"PNCB3000028L001","price":670.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienNCB300CombiBoiler.jpg?v=1783080459"},{"product_id":"navien-ncb300-37kw-combi-boiler","title":"Navien NCB300 37kW Combi Boiler","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eNavien NCB300-37K\u003c\/strong\u003e is a wall-hung, room-sealed gas condensing \u003cstrong\u003ecombi boiler\u003c\/strong\u003e rated at 37kW, Navien's entry model offering the same core componentry as the larger NCB500\/700 ranges in a compact, cupboard-friendly design. Built around \u003cstrong\u003edual stainless steel heat exchangers\u003c\/strong\u003e, it combines a wide \u003cstrong\u003e6:1 turndown ratio\u003c\/strong\u003e with a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e as standard, making it well suited to two showers.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e37kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency (A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e15.2 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Flow (ΔT35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e6:1\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e5 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e33kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eLift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eInstallation, commissioning and servicing of this boiler must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. A Benchmark commissioning checklist must be completed and left with the end user, and the flue must be positioned in accordance with the clearances set out in the manufacturer's installation and operation manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eLPG Conversion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe boiler is shipped ready to fire on natural gas. An \u003cstrong\u003eLPG conversion kit is included in the boiler packaging\u003c\/strong\u003e for field conversion by a suitably qualified Gas Safe engineer, but is not fitted as standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Boiler\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eDual Stainless Steel Heat Exchangers\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eBoth the primary and secondary heat exchangers are \u003cstrong\u003estainless steel\u003c\/strong\u003e rather than aluminium, giving strong resistance to corrosion from acidic condensate over the boiler's working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003e6:1 Turndown Ratio\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA wide \u003cstrong\u003e6:1 modulation range\u003c\/strong\u003e lets the burner idle down to a low minimum output on milder days, avoiding the short-cycling that wears components faster on boilers with a narrower turndown.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHydrogen-Ready (20% Blend)\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe NCB300 is tested and approved for use with up to a \u003cstrong\u003e20% hydrogen blend\u003c\/strong\u003e in the gas supply, helping future-proof the installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eErP A+ with Smart Plus\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003ePaired with a Navien Smart Plus wireless thermostat, system efficiency rises from \u003cstrong\u003eErP A (93%) to ErP A+ (98%)\u003c\/strong\u003e, thanks to weather forecasting and geofencing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 395 x 285 x 680mm and 33kg lift weight, the NCB300 is built for easy cupboard-fit installation without sacrificing DHW performance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eSmartphone Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003ePairs with the Navien Smart Plus app for remote adjustment of heating and hot water, alongside smart weather forecasting and geofencing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eArticle number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003ePNCB3000037L001 (NCB300-37K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing combi (B23-C13-C33-C53-C83)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFuel type\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eNatural gas (LPG conversion kit included, field conversion required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e395 x 285 x 680 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e5 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eShower rating\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eTwo showers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat input range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.6 – 26.8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat output range (80\/60°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.5 – 26.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eModulation (max\/min)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW heat input \/ output range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e4.6 – 37.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 25°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e21.3 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 35°C)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e15.2 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate, kitchen tap (ΔT = 45°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e11.8 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW turndown ratio\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eA (93%) — A+ (98%) with Smart Plus control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx classification\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eClass 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eLift weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e33 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue diameter\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eCoaxial 60\/100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I run this boiler on LPG?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAn LPG conversion kit is included in the boiler's packaging as standard, but the boiler ships configured for natural gas. Conversion must be carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat size property is the NCB300-37K suitable for?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eWith a DHW output of 37kW, the NCB300-37K is designed for two showers, subject to a proper heat loss calculation and mains flow rate check.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this boiler include a flue kit?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo, this listing is for the boiler only. A compatible Navien 60\/100mm flue kit is required and sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWill this boiler improve its efficiency rating with a smart thermostat?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eYes. Pairing a Navien Smart Plus wireless thermostat with this boiler raises the system's ErP rating from A (93%) to A+ (98%).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":65140855669085,"sku":"PNCB3000037L001","price":795.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienNCB300CombiBoiler.jpg?v=1783080459"},{"product_id":"navien-ncb700-on-54kw-combi-boiler","title":"Navien NCB700 ON 54kW Combi Boiler","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eNavien NCB700-3S\/54K\u003c\/strong\u003e is a wall-hung, room-sealed gas condensing \u003cstrong\u003eCombi Crossover boiler\u003c\/strong\u003e rated at 54kW — the first product of its kind capable of delivering hot water to \u003cstrong\u003ethree bathrooms simultaneously\u003c\/strong\u003e. Navien's \u003cstrong\u003eON technology\u003c\/strong\u003e maximises recirculation of domestic hot water to combine the consistent flow of a system boiler with the space-saving convenience of a combi, eliminating the slow heat-up times and flow-rate drop-off of a conventional combi at this scale.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e54kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency (A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e25.8 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eDHW Flow (ΔT30°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e15:1\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eTurndown Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e12 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e46kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eLift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eInstallation, commissioning and servicing of this boiler must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. A Benchmark commissioning checklist must be completed and left with the end user, and the flue must be positioned in accordance with the clearances set out in the manufacturer's installation and operation manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eLPG Conversion \u0026amp; Sizing\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe boiler is shipped ready to fire on natural gas, with an \u003cstrong\u003eLPG conversion kit included\u003c\/strong\u003e in the packaging for field conversion by a suitably qualified Gas Safe engineer. At 54kW DHW output, this is a large-property boiler — confirm mains water flow rate and pressure are sufficient to make full use of its 25.8 l\/min hot water delivery before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Boiler\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eNavien ON Recirculation Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eBuilt-in \u003cstrong\u003eDHW recirculation\u003c\/strong\u003e keeps hot water primed at outlets around the property, removing the wait and the fluctuation between hot and cold that affects conventional combi boilers under heavy simultaneous demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eThree Showers Simultaneously\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eRated to deliver hot water to \u003cstrong\u003ethree bathrooms at once\u003c\/strong\u003e, the NCB700 ON removes the need to choose between a combi's compact footprint and a system boiler's simultaneous hot water capacity.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eIndustry-Leading 15:1 Turndown\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA \u003cstrong\u003e15:1 modulation ratio\u003c\/strong\u003e allows the burner to idle at a very low minimum output, improving part-load efficiency and comfort across a huge range of demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eNaviCirc™ Hot Water Return\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003e\n\u003cstrong\u003eNaviCirc™\u003c\/strong\u003e simplifies the setup of a hot water return system, supporting fast, consistent delivery to outlets throughout a larger home.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eHydrogen-Ready (20% Blend)\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eTested and approved for use with up to a \u003cstrong\u003e20% hydrogen blend\u003c\/strong\u003e in the gas supply, helping future-proof the installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003e12-Year Warranty\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eNavien back the NCB700 ON with a \u003cstrong\u003e12-year parts and labour warranty\u003c\/strong\u003e as standard — the longest in the current Navien gas range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eArticle number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003ePNCB7000054L001 (NCB700-3S\/54K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing Combi Crossover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFuel type\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eNatural gas (LPG conversion kit included, field conversion required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e440 x 353 x 695 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e12 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eShower rating\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eThree showers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat input range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.5 – 35.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat output range (80\/60°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.4 – 34.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eModulation (max\/min)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e15:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eDomestic Hot Water\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW heat input range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.5 – 52.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW output range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.5 – 54.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 25°C)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e31.0 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate (ΔT = 30°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e25.8 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDHW flow rate, kitchen tap (ΔT = 45°C)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e17.2 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eA (94%) — A+ (98%) with single Smart Plus control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eNOx classification\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eClass 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eLift weight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e46 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue diameter\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eCoaxial 60\/100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e20 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e21 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat does ON technology actually do?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eIt maximises recirculation of domestic hot water around the property's pipework, so hot water is already primed at outlets rather than needing to travel the full length of pipe from the boiler on every draw-off — reducing water wastage and the wait for hot water.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan this boiler really supply three bathrooms at once?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eYes — Navien designed the NCB700 ON specifically to deliver hot water to three bathrooms simultaneously without the flow or temperature drop-off typical of smaller combi boilers under similar demand.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDo I still need a hot water cylinder with this boiler?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. As a Combi Crossover model, the NCB700 ON supplies domestic hot water directly, without needing a separate storage cylinder, despite its system-boiler-level performance.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I run this boiler on LPG?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAn LPG conversion kit is included in the boiler's packaging as standard, but the boiler ships configured for natural gas. Conversion must be carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":65142551118173,"sku":"PNCB7000054L001","price":2095.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienCombiBoilerSide.jpg?v=1783090844"},{"product_id":"navien-ncb500-15kw-system-boiler","title":"Navien NCB500 15kW System Boiler","description":"\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; font-family: Arial, Helvetica, sans-serif; color: #222;\"\u003e\n\u003cdiv style=\"line-height: 1.65; color: #222; margin-bottom: 20px;\"\u003eThe \u003cstrong\u003eNavien NCB500-15K\u003c\/strong\u003e is a wall-hung, room-sealed gas condensing \u003cstrong\u003esystem boiler\u003c\/strong\u003e rated at 15kW, designed to work with a separate hot water cylinder for properties with multiple bathrooms or higher simultaneous hot water demand. Built around a \u003cstrong\u003epremium stainless steel heat exchanger\u003c\/strong\u003e, the NCB500 fits comfortably inside a standard kitchen or airing cupboard while delivering \u003cstrong\u003efully modulating\u003c\/strong\u003e output and a market-leading \u003cstrong\u003e10-year parts and labour warranty\u003c\/strong\u003e as standard.\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 26px;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 110px; background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.15;\"\u003e15kW\u003cimg\u003e\u003cimg\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .92; margin-top: 4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 110px; background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.15;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .92; margin-top: 4px;\"\u003eErP Efficiency (A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 110px; background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.15;\"\u003e105.9%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .92; margin-top: 4px;\"\u003eFull-Load Efficiency (50\/30°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 110px; background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.15;\"\u003e6:1\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .92; margin-top: 4px;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 110px; background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.15;\"\u003e10 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .92; margin-top: 4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 110px; background: #008377CF; color: #fff; border-radius: 8px; padding: 14px 10px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: 800; line-height: 1.15;\"\u003e27kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; opacity: .92; margin-top: 4px;\"\u003eLift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fdecea; border-left: 5px solid #c0392b; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #8a1f13; font-size: 14px; margin-bottom: 5px;\"\u003eGas Safe Registration Required\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003eInstallation, commissioning and servicing of this boiler must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. A Benchmark commissioning checklist must be completed and left with the end user, and the flue must be positioned in accordance with the clearances set out in the manufacturer's installation and operation manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e6; border-left: 5px solid #b8860b; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #7a5900; font-size: 14px; margin-bottom: 5px;\"\u003eSystem Boiler — Cylinder Required Separately\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It requires a separate unvented or vented hot water cylinder to store and deliver domestic hot water, which is not included in this listing. An LPG conversion kit is included in the boiler's packaging for field conversion by a suitably qualified Gas Safe engineer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 18px; font-weight: bold; color: #00594f; border-bottom: 3px solid #008377CF; padding-bottom: 8px; margin: 30px 0 14px;\"\u003eWhy This Boiler\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 18px 0 26px;\"\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 0 6px 6px 0; padding: 14px 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00594f; font-size: 14.5px; margin-bottom: 6px;\"\u003ePremium Stainless Steel Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003eOffers \u003cstrong\u003esuperior resistance to corrosion and wear\u003c\/strong\u003e compared with traditional aluminium components, translating into lower maintenance costs and a longer working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 0 6px 6px 0; padding: 14px 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00594f; font-size: 14.5px; margin-bottom: 6px;\"\u003eFully Modulating Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003eThe burner automatically adjusts its output across a \u003cstrong\u003e6:1 turndown ratio\u003c\/strong\u003e to match real-time heating demand, avoiding the short-cycling that wastes gas and wears components on less flexible boilers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 0 6px 6px 0; padding: 14px 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00594f; font-size: 14.5px; margin-bottom: 6px;\"\u003e10-Year Warranty as Standard\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003eNavien back the NCB500 with a \u003cstrong\u003e10-year parts and labour warranty\u003c\/strong\u003e included as standard on every installation, without needing separate registration steps.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 0 6px 6px 0; padding: 14px 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00594f; font-size: 14.5px; margin-bottom: 6px;\"\u003eCompact Cupboard-Fit Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003eAt 395 x 283 x 680mm, the NCB500 is compact enough to fit into a standard kitchen or airing cupboard, easing installation in space-constrained properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 0 6px 6px 0; padding: 14px 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00594f; font-size: 14.5px; margin-bottom: 6px;\"\u003eErP A+ with Smart Plus\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003ePaired with the Navien Smart Plus control pack, system efficiency rises from \u003cstrong\u003eErP A (93%) to ErP A+ (98%)\u003c\/strong\u003e, thanks to weather forecasting and geofencing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f2; border-left: 4px solid #008377CF; border-radius: 0 6px 6px 0; padding: 14px 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00594f; font-size: 14.5px; margin-bottom: 6px;\"\u003eBuilt-In Smart Control Connector\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #333; line-height: 1.6;\"\u003eA dedicated connector for the Navien Smart Room Controller is built into the back of the front panel, so no separate terminal wiring is required when adding smart controls.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 18px; font-weight: bold; color: #00594f; border-bottom: 3px solid #008377CF; padding-bottom: 8px; margin: 30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 18px 0 26px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .04em; text-transform: uppercase;\" colspan=\"2\"\u003eGeneral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eArticle number\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003ePNCB5000015L001 (NCB500-15K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing system boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eFuel type\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003eNatural gas (LPG conversion kit included, field conversion required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e395 x 283 x 680 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e10 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .04em; text-transform: uppercase;\" colspan=\"2\"\u003eHeating Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eHeat input range\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e2.7 – 15.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eHeat output range (80\/60°C)\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e2.6 – 15.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eCondensing heat output range (50\/30°C)\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e2.9 – 16.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eFull-load efficiency, Max output (50\/30°C, condensing)\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e105.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eModulation (max\/min)\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e6:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eMax. heating operating pressure\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e2.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eMax. heating temperature\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e90°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eAdjustable heating temperature range\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e40 – 90°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .04em; text-transform: uppercase;\" colspan=\"2\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003eA (93%) — A+ (98%) with Smart Plus control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eLift weight\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e27 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .04em; text-transform: uppercase;\" colspan=\"2\"\u003eFlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eFlue diameter\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003eCoaxial 60\/100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eMax. horizontal coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background: #ffffff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 44%; border-bottom: 1px solid #e2e2e2;\"\u003eMax. vertical coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background: #f2faf9; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 18px; font-weight: bold; color: #00594f; border-bottom: 3px solid #008377CF; padding-bottom: 8px; margin: 30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin: 18px 0 10px;\"\u003e\n\u003cdetails style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; font-weight: bold; font-size: 14.5px; cursor: pointer; list-style: none;\"\u003eDoes this boiler include a hot water cylinder?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 14px; color: #333; line-height: 1.65; background: #fff;\"\u003eNo. As a system boiler, the NCB500-15K requires a separate hot water cylinder to store and deliver domestic hot water. Cylinders are sold separately.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; font-weight: bold; font-size: 14.5px; cursor: pointer; list-style: none;\"\u003eCan I run this boiler on LPG?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 14px; color: #333; line-height: 1.65; background: #fff;\"\u003eAn LPG conversion kit is included in the boiler's packaging as standard, but the boiler ships configured for natural gas. Conversion must be carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; font-weight: bold; font-size: 14.5px; cursor: pointer; list-style: none;\"\u003eWhat size property is the NCB500-15K suitable for?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 14px; color: #333; line-height: 1.65; background: #fff;\"\u003eWith a 15kW output, the NCB500-15K suits smaller properties with more modest heating and hot water demand, subject to a proper heat loss calculation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; font-weight: bold; font-size: 14.5px; cursor: pointer; list-style: none;\"\u003eDoes this boiler support smart heating controls?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 14px; color: #333; line-height: 1.65; background: #fff;\"\u003eYes. The NCB500 has a dedicated built-in connector for Navien's Smart Room Controller, and is 3-zone ready when combined with the separately available Smart Plus control pack.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 18px; font-weight: bold; font-size: 14.5px; cursor: pointer; list-style: none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px; font-size: 14px; color: #333; line-height: 1.65; background: #fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":65142682026333,"sku":"PNCB5000015L001","price":995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienSystemBoiler.jpg?v=1783091825"},{"product_id":"navien-ncb500-18kw-system-boiler","title":"Navien NCB500 18kW System Boiler","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eNavien NCB500-18K\u003c\/strong\u003e is a wall-hung, room-sealed gas condensing \u003cstrong\u003esystem boiler\u003c\/strong\u003e rated at 18kW, designed to work with a separate hot water cylinder for properties with multiple bathrooms or higher simultaneous hot water demand. Built around a \u003cstrong\u003epremium stainless steel heat exchanger\u003c\/strong\u003e, the NCB500 fits comfortably inside a standard kitchen or airing cupboard while delivering \u003cstrong\u003efully modulating\u003c\/strong\u003e output and a market-leading \u003cstrong\u003e10-year parts and labour warranty\u003c\/strong\u003e as standard.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e18kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eHeat Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eErP Efficiency (A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e104.6%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eFull-Load Efficiency (50\/30°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e6:1\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e10 yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e29kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eLift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe Registration Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eInstallation, commissioning and servicing of this boiler must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. A Benchmark commissioning checklist must be completed and left with the end user, and the flue must be positioned in accordance with the clearances set out in the manufacturer's installation and operation manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eSystem Boiler — Cylinder Required Separately\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis is a \u003cstrong\u003esystem boiler\u003c\/strong\u003e, not a combi. It requires a separate unvented or vented hot water cylinder to store and deliver domestic hot water, which is not included in this listing. An LPG conversion kit is included in the boiler's packaging for field conversion by a suitably qualified Gas Safe engineer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Boiler\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePremium Stainless Steel Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eOffers \u003cstrong\u003esuperior resistance to corrosion and wear\u003c\/strong\u003e compared with traditional aluminium components, translating into lower maintenance costs and a longer working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eFully Modulating Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThe burner automatically adjusts its output across a \u003cstrong\u003e6:1 turndown ratio\u003c\/strong\u003e to match real-time heating demand, avoiding the short-cycling that wastes gas and wears components on less flexible boilers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003e10-Year Warranty as Standard\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eNavien back the NCB500 with a \u003cstrong\u003e10-year parts and labour warranty\u003c\/strong\u003e included as standard on every installation, without needing separate registration steps.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eCompact Cupboard-Fit Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt 395 x 283 x 680mm, the NCB500 is compact enough to fit into a standard kitchen or airing cupboard, easing installation in space-constrained properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eErP A+ with Smart Plus\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003ePaired with the Navien Smart Plus control pack, system efficiency rises from \u003cstrong\u003eErP A (93%) to ErP A+ (98%)\u003c\/strong\u003e, thanks to weather forecasting and geofencing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eBuilt-In Smart Control Connector\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eA dedicated connector for the Navien Smart Room Controller is built into the back of the front panel, so no separate terminal wiring is required when adding smart controls.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eArticle number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003ePNCB5000019L001 (NCB500-18K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eBoiler type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eWall-hung, room-sealed, fan-assisted condensing system boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFuel type\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eNatural gas (LPG conversion kit included, field conversion required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e395 x 283 x 680 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e10 years parts and labour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eHeating Performance\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat input range\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.2 – 18.6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eHeat output range (80\/60°C)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.1 – 18.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eCondensing heat output range (50\/30°C)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e3.4 – 19.4 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFull-load efficiency, Max output (50\/30°C, condensing)\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e104.6%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eModulation (max\/min)\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e6:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. heating operating pressure\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e2.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. heating temperature\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e90°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eAdjustable heating temperature range\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e40 – 90°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003ePerformance \u0026amp; Emissions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eErP efficiency\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eA (93%) — A+ (98%) with Smart Plus control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eLift weight\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e29 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eFlue\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue diameter\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eCoaxial 60\/100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. horizontal coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMax. vertical coaxial flue length\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e8 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this boiler include a hot water cylinder?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. As a system boiler, the NCB500-18K requires a separate hot water cylinder to store and deliver domestic hot water. Cylinders are sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I run this boiler on LPG?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eAn LPG conversion kit is included in the boiler's packaging as standard, but the boiler ships configured for natural gas. Conversion must be carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWhat size property is the NCB500-18K suitable for?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eWith an 18kW output, the NCB500-18K suits small to medium properties, subject to a proper heat loss calculation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eDoes this boiler support smart heating controls?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eYes. The NCB500 has a dedicated built-in connector for Navien's Smart Room Controller, and is 3-zone ready when combined with the separately available Smart Plus control pack.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":65142760538461,"sku":"PNCB5000019L001","price":995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienSystemBoiler.jpg?v=1783091825"},{"product_id":"baxi-430-combi-2-1-boiler-30kw-natural-gas-lpg","title":"Baxi 430 Combi 2.1 Boiler 30kW (Natural Gas\/LPG)","description":"\u003cdiv style=\"font-size: 16px; max-width: 900px; font-family: Arial, Helvetica, sans-serif; color: #2b2b2b; line-height: 1.6;\"\u003e\n\u003cp style=\"margin: 0 0 20px 0; line-height: 1.6; color: #2b2b2b;\"\u003eThe \u003cstrong\u003eBaxi 430 Combi 2.1\u003c\/strong\u003e is a 30kW high-efficiency condensing combi boiler engineered for medium-sized homes with up to two bathrooms. It combines instant hot water and central heating in one compact, wall-mounted unit, removing the need for a separate cylinder or tank. Built with a \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003ebrass hydraulics\u003c\/strong\u003e, it runs on Natural Gas or LPG without a conversion kit, and is backed by a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #008377CF; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; line-height: 1.2; font-size: 20px; color: #ffffff;\"\u003e30kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #e7f5f3; margin-top: 4px; line-height: 1.3;\"\u003eDHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #008377CF; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; line-height: 1.2; font-size: 20px; color: #ffffff;\"\u003e27.1kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #e7f5f3; margin-top: 4px; line-height: 1.3;\"\u003eCH Output (Condensing)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #008377CF; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; line-height: 1.2; font-size: 20px; color: #ffffff;\"\u003eA Rated\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #e7f5f3; margin-top: 4px; line-height: 1.3;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #008377CF; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; line-height: 1.2; font-size: 20px; color: #ffffff;\"\u003e12.2 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #e7f5f3; margin-top: 4px; line-height: 1.3;\"\u003eDHW Flow Rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #008377CF; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; line-height: 1.2; font-size: 20px; color: #ffffff;\"\u003e5 Years\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #e7f5f3; margin-top: 4px; line-height: 1.3;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 140px; background: #008377CF; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; line-height: 1.2; font-size: 20px; color: #ffffff;\"\u003e29kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #e7f5f3; margin-top: 4px; line-height: 1.3;\"\u003eInstaller Lift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #C0392B; background: #FDEDEB; border-radius: 6px; padding: 14px 16px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #9b2c1f; margin-bottom: 6px; font-size: 14px;\"\u003eInstallation must be by a Gas Safe registered engineer\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eThis appliance must be installed, commissioned and serviced only by a Gas Safe registered engineer, in accordance with Building Regulations and the manufacturer's Installation and Service Manual. A Benchmark Commissioning Checklist must be completed on installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #B7791F; background: #FEF6E7; border-radius: 6px; padding: 14px 16px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #8a5a10; margin-bottom: 6px; font-size: 14px;\"\u003eCable sizing is site-specific\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eThe boiler requires a permanent electrical live supply. Actual cable sizing for the fixed electrical connection must be calculated by a qualified electrician in accordance with BS 7671, based on cable run length and installation method.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 4px solid #008377CF; background: #EAF6F4; border-radius: 6px; padding: 14px 16px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00594f; margin-bottom: 6px; font-size: 14px;\"\u003eDual fuel flexibility as standard\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eThis boiler ships ready for \u003cstrong\u003eNatural Gas\u003c\/strong\u003e and can be manually converted to \u003cstrong\u003eLPG\u003c\/strong\u003e without needing a separate conversion kit, making it a practical choice for both mains-gas properties and off-grid installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 17px; color: #00594f; margin: 28px 0 12px 0;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eStainless Steel Heat Exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eA fully stainless steel primary heat exchanger resists corrosion and scale build-up far better than aluminium alternatives, supporting long-term reliability in hard water areas.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003ePre-Heated Siphonic Condensate Trap\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eThe condensate trap is pre-heated before discharge, significantly reducing the risk of the pipe freezing and locking the boiler out during cold winter spells.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eBrass Hydraulic Block\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eBrass hydraulics replace lower-grade plastics at key water-carrying junctions, improving durability under the pressure cycling combi boilers experience during frequent hot water draw-off.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eCombined PRV with Separate Drain\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eThe pressure relief valve routes to its own dedicated drain point, allowing a faster and safer boiler drain-down for repairs without disturbing the main condensate route.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eExternal Analogue Pressure Gauge\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003eA visible external gauge lets homeowners check and top up system pressure themselves, reducing avoidable engineer call-outs for simple low-pressure faults.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; background: #F7FBFA; border: 1px solid #E0EDEB; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 8px; font-size: 15px;\"\u003eAmbizen and uSense 2 Smart Control Compatible\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.6; color: #2b2b2b;\"\u003ePairing with the Baxi Ambizen or uSense 2 Smart Room Thermostat unlocks an A+ central heating efficiency rating and remote schedule control from a smartphone app.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 17px; color: #00594f; margin: 28px 0 12px 0;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 0 0 24px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 12px; font-size: 14px;\"\u003ePerformance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMax DHW Output\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMax CH Output (Condensing)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e27.1 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMin CH Output (Condensing)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e6.3 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMax CH Output (Non-Condensing)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e25 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMax Gas Rate (Natural Gas, G20)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e3.26 m³\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eWater Heating Efficiency Class\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eCentral Heating Efficiency (with uSense 2)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eA+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eSAP 2009 Efficiency\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 12px; font-size: 14px;\"\u003eHydraulic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMax DHW Flow Rate (ΔT 35°C)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e12.2 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMin DHW Flow Rate Required\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e2 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMin Operating DHW Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e0.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eIntegral Expansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e7 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMax CH System Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e100 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eIntegral Automatic Bypass\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 12px; font-size: 14px;\"\u003eGas \u0026amp; Electrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eFuel Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eNatural Gas or LPG (manual conversion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eInlet Supply Pressure (Natural Gas)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e20 mbar nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003ePermanent Live Required\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eExternal Fuse Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eF0.5A L250VP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003ePump Overrun\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eIntegral Frost Thermostat\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 12px; font-size: 14px;\"\u003eDimensions \u0026amp; Weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eHeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e700 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eWidth\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e395 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eDepth\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e285 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eInstaller Lift Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e29 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eMinimum Side Clearance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e2.5 mm (min recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 12px; font-size: 14px;\"\u003eWarranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FBFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB; width: 55%;\"\u003eParts \u0026amp; Labour\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; font-size: 14px; color: #2b2b2b; border-bottom: 1px solid #E0EDEB;\"\u003e5 Years (subject to manufacturer's T\u0026amp;Cs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 17px; color: #00594f; margin: 28px 0 12px 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin: 0 0 24px 0;\"\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 12px 16px; cursor: pointer; font-size: 14px; list-style: none;\"\u003eIs the Baxi 430 Combi 2.1 suitable for a 2-bathroom home?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 14px; line-height: 1.6; color: #2b2b2b; background: #FFFFFF;\"\u003eYes. With a 30kW DHW output and 12.2 L\/min flow rate at 35°C rise, it is designed for medium-sized homes with up to two bathrooms and moderate simultaneous hot water demand.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 12px 16px; cursor: pointer; font-size: 14px; list-style: none;\"\u003eCan this boiler run on LPG?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 14px; line-height: 1.6; color: #2b2b2b; background: #FFFFFF;\"\u003eYes. The Baxi 430 Combi 2.1 is certified for both \u003cstrong\u003eNatural Gas and LPG\u003c\/strong\u003e and can be manually converted between the two without needing a separate conversion kit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 12px 16px; cursor: pointer; font-size: 14px; list-style: none;\"\u003eDoes it fit in a standard kitchen cupboard?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 14px; line-height: 1.6; color: #2b2b2b; background: #FFFFFF;\"\u003eAt 700mm (H) x 395mm (W) x 285mm (D), the boiler is compact enough to fit within a 290mm deep cupboard, making it suitable for space-restricted installations.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 12px 16px; cursor: pointer; font-size: 14px; list-style: none;\"\u003eWhat is the warranty on this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 14px; line-height: 1.6; color: #2b2b2b; background: #FFFFFF;\"\u003eThe Baxi 430 Combi 2.1 comes with a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e, subject to registration and an annual service by a Gas Safe registered engineer.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin: 0 0 10px 0; border: 1px solid #E0EDEB; border-radius: 6px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 12px 16px; cursor: pointer; font-size: 14px; list-style: none;\"\u003eIs a smart thermostat required?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 14px; line-height: 1.6; color: #2b2b2b; background: #FFFFFF;\"\u003eNo, but pairing the boiler with the \u003cstrong\u003eBaxi Ambizen or uSense 2 Smart Room Thermostat\u003c\/strong\u003e raises the central heating efficiency rating from A to A+ and adds remote scheduling.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"Default Title","offer_id":65218789540189,"sku":"7872836","price":930.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Baxi-400-Combi-2.1-NG-or-LPG-Boiler.jpg?v=1783688218"},{"product_id":"vaillant-ecotec-plus-424-open-vent-heat-only-boiler-10021223-24kw","title":"Vaillant ecoTEC Plus 424 Open Vent Heat Only Boiler | 10021223 | 24kW","description":"\u003c!-- SEO Product Name: Vaillant ecoTEC Plus 424 Open Vent Heat Only Boiler | 10021223 | 24kW --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px;\"\u003e\n\u003cp style=\"margin: 0 0 16px 0; line-height: 1.6;\"\u003eThe \u003cstrong\u003eVaillant ecoTEC Plus 424 (MPN 10021223)\u003c\/strong\u003e is a 24kW \u003cstrong\u003eopen vent (regular\/heat-only) gas boiler\u003c\/strong\u003e, designed for homes running a traditional open-vented system with a hot water cylinder and a cold water storage tank in the loft. It's built for households with \u003cstrong\u003ehigher, more consistent hot water demand across two or more bathrooms\u003c\/strong\u003e, where an open vent system's steady pressure delivery suits the property better than a combi.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 20px 0; line-height: 1.6;\"\u003eOne of the \u003cstrong style=\"color: #008377cf;\"\u003emost compact open vent boilers Vaillant has developed\u003c\/strong\u003e, the 424 is hand-built at Vaillant's Derbyshire manufacturing plant and comes with a \u003cstrong\u003e5-year guarantee out of the box\u003c\/strong\u003e, extendable to \u003cstrong\u003e10 years\u003c\/strong\u003e when registered with Vaillant Advance and fitted with a boiler protection kit. A \u003cstrong\u003erear flue option\u003c\/strong\u003e and push-fit flue system give installers flexibility to site the boiler in more locations than a top-flue-only design allows.\u003c\/p\u003e\n\u003c!-- Stat strip --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e30kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eMax DHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e1:4.9\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e10 Yrs\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eWarranty (Advance)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eClass 6\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eNOx Rating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #f4faf9; border: 1px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e23kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #333;\"\u003eBoiler Lift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Callouts --\u003e\n\u003cdiv style=\"background: #fff4f4; border-left: 4px solid #c0392b; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003eGas Safe installation required.\u003c\/strong\u003e This is a mains gas appliance and must be installed, commissioned and serviced by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with Building Regulations Part L and current Gas Safety (Installation and Use) Regulations.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8ec; border-left: 4px solid #d4900a; border-radius: 6px; padding: 14px 16px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #d4900a;\"\u003eBoiler-only, open vent system required:\u003c\/strong\u003e This is a \u003cstrong\u003eheat-only (regular) boiler\u003c\/strong\u003e, not a combi or system boiler. It must be installed with an existing or new \u003cstrong\u003eopen-vented cylinder and cold water storage tank\u003c\/strong\u003e — it will not work as a standalone unit and does not provide instant mains-pressure hot water on its own.\u003c\/div\u003e\n\u003c!-- Feature grid --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eCompact, Lightweight Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eAt \u003cstrong\u003e602 × 375 × 320mm and 23kg\u003c\/strong\u003e, it's one of the most compact open vent boilers Vaillant has built, giving installers excellent siting flexibility including standard kitchen cupboards.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eRear Flue Option\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eA \u003cstrong\u003erear flue outlet is available alongside the standard top flue\u003c\/strong\u003e, letting the boiler be installed in situations where a top exit isn't practical.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eWide Modulation Range\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eA \u003cstrong\u003e1:4.9 modulation ratio\u003c\/strong\u003e lets the boiler closely match output to demand, reducing cycling and improving overall energy efficiency compared with a narrower-range appliance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eBuilt-In Frost Protection\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003e\n\u003cstrong\u003eTwo-stage frost protection\u003c\/strong\u003e is built in as standard, keeping the boiler safely operational through cold snaps without extra components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eLarge Backlit Display\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003eA \u003cstrong\u003elarge backlit plain-text display\u003c\/strong\u003e gives clear visibility of boiler status and fault codes even in poor lighting, with push-button programming for straightforward day-to-day use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; border: 1px solid #ddd; border-radius: 8px; padding: 16px; background: #fff;\"\u003e\n\u003cdiv style=\"color: #008377cf; font-weight: bold; margin-bottom: 6px;\"\u003eEasy Access Servicing\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.5; color: #333;\"\u003e\n\u003cstrong\u003eRemovable side panels\u003c\/strong\u003e give installers and engineers straightforward access during installation, routine maintenance and repair work.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Spec table --\u003e\n\u003cdiv style=\"border: 1px solid #ddd; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eHeating Performance\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (50\/30°C, condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e6.3–25.7 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNominal Heat Output (80\/60°C, non-condensing)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e6.1–24.6 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eModulation Ratio\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e1:4.9\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFlow Temperature Range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e10–80°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eFlow Temperature Factory Setting\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e75°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eWater Generation\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMaximum Heat Output for Water Generation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e30 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eApproximate Condensate Volume (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e2.47 litres\/hr\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003ePhysical \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eDimensions (H × W × D)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e602 × 375 × 320 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eBoiler Lift Weight (dry)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e23.0 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eGas Inlet Connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e15mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeating Flow \u0026amp; Return Connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e22mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eHeat Exchanger Material\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eAluminium\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eEmissions \u0026amp; Noise\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNOx Class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eClass 6\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eNOx Emissions (EN 15502-2-1)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e39 mg\/kWh\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e94%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Sound Power\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e52 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eFlueing Options\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal Flue (60\/100)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e10 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Vertical Flue (60\/100)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e10 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Horizontal Flue (80\/125)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e25 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eMax Vertical Flue (80\/125)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e25 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eRear Flue Option\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 10px 16px;\"\u003eCompliance \u0026amp; Coverage\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eManufacturer Part Number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e0010021223\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eGas Council Number\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e41-694-16\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px; background: #f9f9f9; border-bottom: 1px solid #eee;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eErP Rating\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003eA (heating)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; padding: 10px 16px;\"\u003e\n\u003cdiv style=\"flex: 1; color: #555;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; font-weight: 600;\"\u003e5 years standard; 10 years with Vaillant Advance registration and boiler protection kit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"margin: 0 0 8px 0;\"\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWhat's the difference between an open vent boiler and a combi boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eAn \u003cstrong\u003eopen vent (regular) boiler only heats water\u003c\/strong\u003e — it needs a separate hot water cylinder and a cold water storage tank, typically in the loft, to store and deliver hot water. A combi boiler heats water on demand with no cylinder needed. Open vent systems suit homes with \u003cstrong\u003ehigher simultaneous hot water demand across multiple bathrooms\u003c\/strong\u003e, since output isn't limited by mains flow rate.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eDo I need a cylinder and tank to use this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eYes. This is a \u003cstrong\u003eheat-only boiler\u003c\/strong\u003e supplied without a cylinder — it must be connected to an existing or new \u003cstrong\u003eopen-vented hot water cylinder and a cold water storage tank\u003c\/strong\u003e to provide domestic hot water. It cannot function as a standalone unit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eHow do I get the full 10-year warranty?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eThe boiler ships with a \u003cstrong\u003e5-year guarantee out of the box\u003c\/strong\u003e. To extend this to \u003cstrong\u003e10 years, it must be registered with Vaillant Advance and fitted with a compatible boiler protection kit\u003c\/strong\u003e at installation — confirm current eligibility and registration steps with Vaillant before completing the install.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px; margin-bottom: 8px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eCan the flue exit through the rear instead of the top?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eYes. The ecoTEC Plus 424 \u003cstrong\u003esupports a rear flue option in addition to the standard top flue\u003c\/strong\u003e, giving installers more flexibility when siting the boiler in properties where a top exit isn't practical.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #ddd; border-radius: 6px;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; font-weight: 600; cursor: pointer; border-radius: 6px;\"\u003eWho can install this boiler?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; line-height: 1.6;\"\u003eInstallation, commissioning and servicing must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with UK Gas Safety (Installation and Use) Regulations and Building Regulations Part L.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":65915729707357,"sku":"10021223","price":1595.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/VaillantecoTECPlus424OpenVentHeatOnlyBoiler.jpg?v=1789371884"},{"product_id":"viessmann-vitodens-050-w-30kw-b0ka-combi-boiler-7098602","title":"Viessmann Vitodens 050-W 30kW B0KA Combi Boiler | 7098602","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 050-W 30kW B0KA Combi Boiler | 7098602 --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 050-W\u003c\/strong\u003e is an attractively priced wall-mounted gas condensing combi boiler, built around Viessmann's own \u003cstrong\u003eInox-Radial stainless steel heat exchanger\u003c\/strong\u003e and modulating \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e — the same core technology used across the wider Vitodens range, in a genuinely compact footprint.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eAt just \u003cstrong\u003e700mm high and 300mm deep\u003c\/strong\u003e, it's small enough to fit inside a standard kitchen cupboard, yet still delivers up to \u003cstrong\u003e97% gross seasonal efficiency\u003c\/strong\u003e, making it a strong value option for both new build and boiler replacement projects.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: 800; color: #00625d;\"\u003e30kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #5a5a5a; margin-top: 4px; line-height: 1.3;\"\u003eCombi output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: 800; color: #00625d;\"\u003e97%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #5a5a5a; margin-top: 4px; line-height: 1.3;\"\u003eGross seasonal efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: 800; color: #00625d;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #5a5a5a; margin-top: 4px; line-height: 1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: 800; color: #00625d;\"\u003e1:4\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #5a5a5a; margin-top: 4px; line-height: 1.3;\"\u003eModulation range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: 800; color: #00625d;\"\u003e14.3 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #5a5a5a; margin-top: 4px; line-height: 1.3;\"\u003eDHW flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 6px; padding: 14px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: 800; color: #00625d;\"\u003e35kg\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; color: #5a5a5a; margin-top: 4px; line-height: 1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; border-radius: 4px; padding: 14px 16px; margin: 0 0 20px 0; display: flex; align-items: flex-start; gap: 10px;\"\u003e\n\u003cspan style=\"font-size: 18px; line-height: 1;\"\u003e🛈\u003c\/span\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.55;\"\u003e\n\u003cstrong style=\"color: #e0942a;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 4px; padding: 14px 16px; margin: 0 0 20px 0; display: flex; align-items: flex-start; gap: 10px;\"\u003e\n\u003cspan style=\"font-size: 18px; line-height: 1;\"\u003eℹ\u003c\/span\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.55;\"\u003e\n\u003cstrong style=\"color: #008377cf;\"\u003eGood to Know:\u003c\/strong\u003e Approved for a hydrogen admixture of up to 20% by volume and tested to EN 15502, this Vitodens 050-W requires \u003cstrong\u003eno conversion kit for LPG\u003c\/strong\u003e — switching gas type is done entirely from the control unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #FFFFFF; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-size: 15.5px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #3a3a3a; line-height: 1.55;\"\u003eDelivers \u003cstrong\u003ehigh operational reliability\u003c\/strong\u003e and a long service life on a very small footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #FFFFFF; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-size: 15.5px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eModulating MatriX cylinder burner\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #3a3a3a; line-height: 1.55;\"\u003eConsumes \u003cstrong\u003erelatively little natural gas\u003c\/strong\u003e with lower CO2 emissions across a wide 1:4 modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #FFFFFF; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-size: 15.5px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eIntegral WiFi control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #3a3a3a; line-height: 1.55;\"\u003eBuilt-in wireless interface supports the \u003cstrong\u003eViCare app\u003c\/strong\u003e for remote heating and hot water control, with no separate modem required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #FFFFFF; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-size: 15.5px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eCompact 700 x 400 x 300mm footprint\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #3a3a3a; line-height: 1.55;\"\u003eSmall enough to be \u003cstrong\u003efitted inside a kitchen cupboard\u003c\/strong\u003e, ideal for flats and space-constrained properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #FFFFFF; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-size: 15.5px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eIntegral instantaneous DHW heating\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #3a3a3a; line-height: 1.55;\"\u003eA plate heat exchanger provides direct \u003cstrong\u003ehot water on demand\u003c\/strong\u003e with a diverter valve, up to 14.3 l\/min flow at a 30K rise.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #FFFFFF; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-size: 15.5px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eVariable speed circulation pump\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px; color: #3a3a3a; line-height: 1.55;\"\u003eThe integral high-efficiency pump adjusts its speed automatically, \u003cstrong\u003ereducing electricity consumption\u003c\/strong\u003e compared with fixed-speed pumps.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #00625d; margin: 32px 0 14px 0; padding-bottom: 8px; border-bottom: 2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 13.5px; letter-spacing: .04em; text-transform: uppercase; padding: 9px 14px; border-radius: 6px 6px 0 0; margin-top: 14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 6px;\"\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eGas condensing combi (Type BPJD)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e3.2 – 25.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e2.9 – 22.4 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eDHW output\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e29.6 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eDHW flow rate\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e12.2 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eStandard seasonal efficiency (Hs)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eUp to 97%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eModulation range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e1:4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 13.5px; letter-spacing: .04em; text-transform: uppercase; padding: 9px 14px; border-radius: 6px 6px 0 0; margin-top: 14px;\"\u003eGas \u0026amp; Electrical\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 6px;\"\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eGas types\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eNatural gas and LPG (no conversion kit required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eHydrogen compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eUp to 20% H2 blend\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eNatural gas supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e20 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eLPG supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e50 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e230V~, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eFuse protection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e10A recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 13.5px; letter-spacing: .04em; text-transform: uppercase; padding: 9px 14px; border-radius: 6px 6px 0 0; margin-top: 14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 6px;\"\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e707mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e35kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eGas connection\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eG 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eHeating flow\/return\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eG 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eDHW\/cold water connections\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003eG 1\/2\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 13.5px; letter-spacing: .04em; text-transform: uppercase; padding: 9px 14px; border-radius: 6px 6px 0 0; margin-top: 14px;\"\u003eExpansion \u0026amp; Circulation\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 6px;\"\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eIntegral expansion vessel\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e8 litres, 0.8 bar pre-charge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eMax. permissible operating pressure\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e3 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eSound power level (rated output)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e45 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F7FAFA; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 14px; font-weight: 600; font-size: 14px; color: #333333;\"\u003eSound power level (partial load)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 14px; font-size: 14px; color: #222222;\"\u003e39 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 4px; padding: 14px 16px; margin: 0 0 20px 0; display: flex; align-items: flex-start; gap: 10px;\"\u003e\n\u003cspan style=\"font-size: 18px; line-height: 1;\"\u003eℹ\u003c\/span\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.55;\"\u003e\n\u003cstrong style=\"color: #008377cf;\"\u003eGood to Know:\u003c\/strong\u003e Fill and top-up water must meet Viessmann's water quality requirements (see VDI 2035 or local equivalent). From a water hardness of 20°dH and above, a water treatment system in the cold water supply is recommended to protect the plate heat exchanger from limescale build-up.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border: 1px solid #D9EDEA; border-radius: 6px; margin-bottom: 8px; overflow: hidden;\"\u003e\n\u003csummary style=\"padding: 13px 16px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat size property suits the 30kW Vitodens 050-W combi?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 13px 16px 15px 16px; font-size: 14.5px; color: #3a3a3a; line-height: 1.6; border-top: 1px solid #D9EDEA; background: #FFFFFF;\"\u003eA 25kW-35kW combi range typically suits a 2-4 bedroom home with one bathroom, depending on radiator count, insulation standard and simultaneous hot water demand — a heat loss calculation is the reliable way to confirm the right size.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #D9EDEA; border-radius: 6px; margin-bottom: 8px; overflow: hidden;\"\u003e\n\u003csummary style=\"padding: 13px 16px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a conversion kit for LPG?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 13px 16px 15px 16px; font-size: 14.5px; color: #3a3a3a; line-height: 1.6; border-top: 1px solid #D9EDEA; background: #FFFFFF;\"\u003eNo, the Vitodens 050-W runs on natural gas or LPG with the fuel type simply reconfigured at the control unit — no physical conversion kit is required.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #D9EDEA; border-radius: 6px; margin-bottom: 8px; overflow: hidden;\"\u003e\n\u003csummary style=\"padding: 13px 16px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eCan this boiler run on a hydrogen gas blend?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 13px 16px 15px 16px; font-size: 14.5px; color: #3a3a3a; line-height: 1.6; border-top: 1px solid #D9EDEA; background: #FFFFFF;\"\u003eYes, it's approved for operation with a hydrogen admixture of up to 20% by volume, giving some future-proofing as UK gas networks trial hydrogen blending.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #D9EDEA; border-radius: 6px; margin-bottom: 8px; overflow: hidden;\"\u003e\n\u003csummary style=\"padding: 13px 16px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat flue system is required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 13px 16px 15px 16px; font-size: 14.5px; color: #3a3a3a; line-height: 1.6; border-top: 1px solid #D9EDEA; background: #FFFFFF;\"\u003eOnly the Viessmann 60\/100mm concentric flue system, CE-designated as one structural unit with the boiler, may be used — third-party flue systems are not certified for this appliance.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #D9EDEA; border-radius: 6px; margin-bottom: 8px; overflow: hidden;\"\u003e\n\u003csummary style=\"padding: 13px 16px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDoes the 050-W come with WiFi built in?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 13px 16px 15px 16px; font-size: 14.5px; color: #3a3a3a; line-height: 1.6; border-top: 1px solid #D9EDEA; background: #FFFFFF;\"\u003eYes, the control unit has an integral WiFi interface for the ViCare app, so no separate internet module or modem is needed for remote monitoring and control.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65935868952925,"sku":"7987364-7098602","price":1437.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens30kWB0KACombiBoiler7098602.jpg?v=1789548739"},{"product_id":"viessmann-vitodens-050-w-35kw-b0ka-combi-boiler-7098603","title":"Viessmann Vitodens 050-W 35kW B0KA Combi Boiler | 7098603","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 050-W 35kW B0KA Combi Boiler | 7098603 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 050-W\u003c\/strong\u003e 35kW combi is the top output model in the 050-W range, built around the \u003cstrong\u003eInox-Radial stainless steel heat exchanger\u003c\/strong\u003e and modulating \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e shared across the Vitodens family.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eAt \u003cstrong\u003e700mm high and just 300mm deep\u003c\/strong\u003e, it packs a genuinely high combi output into a compact casing, suiting larger households with higher simultaneous hot water demand.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e35kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombi output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e97%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eGross seasonal efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e1:4\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eModulation range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e14.3 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDHW flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e37kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e Approved for a hydrogen admixture of up to 20% by volume and tested to EN 15502, this Vitodens 050-W requires \u003cstrong\u003eno conversion kit for LPG\u003c\/strong\u003e — switching gas type is done entirely from the control unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003ehigh operational reliability\u003c\/strong\u003e and a long service life on a very small footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eModulating MatriX cylinder burner\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eConsumes \u003cstrong\u003erelatively little natural gas\u003c\/strong\u003e with lower CO2 emissions across a wide 1:4 modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral WiFi control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eBuilt-in wireless interface supports the \u003cstrong\u003eViCare app\u003c\/strong\u003e for remote heating and hot water control, with no separate modem required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact 700 x 400 x 300mm footprint\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOne of the \u003cstrong\u003esmallest 35kW combi boilers\u003c\/strong\u003e available, well suited to modernisation projects.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral instantaneous DHW heating\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eA plate heat exchanger provides direct \u003cstrong\u003ehot water on demand\u003c\/strong\u003e with a diverter valve, up to 14.3 l\/min flow.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eVariable speed circulation pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eThe integral high-efficiency pump adjusts its speed automatically, \u003cstrong\u003ereducing electricity consumption\u003c\/strong\u003e compared with fixed-speed pumps.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing combi (Type BPJD)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 32.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 29.3 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e35.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW flow rate\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e14.3 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eStandard seasonal efficiency (Hs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 97%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eModulation range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e1:4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eGas \u0026amp; Electrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas types\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eNatural gas and LPG (no conversion kit required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHydrogen compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 20% H2 blend\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eNatural gas supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e20 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eLPG supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e50 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e230V~, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e707mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e37kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeating flow\/return\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW\/cold water connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 1\/2\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e Fill and top-up water must meet Viessmann's water quality requirements (see VDI 2035 or local equivalent). From a water hardness of 20°dH and above, a water treatment system in the cold water supply is recommended to protect the plate heat exchanger from limescale build-up.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size property suits the 35kW Vitodens 050-W combi?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003e35kW combi boilers typically suit larger 4-5 bedroom homes with more than one bathroom or higher simultaneous hot water demand — a heat loss calculation is the reliable way to confirm sizing.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a conversion kit for LPG?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eNo, the Vitodens 050-W runs on natural gas or LPG with the fuel type simply reconfigured at the control unit.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this boiler run on a hydrogen gas blend?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, it's approved for operation with a hydrogen admixture of up to 20% by volume.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow does the 35kW combi compare to the 30kW model?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eBoth share the same casing and control platform; the 35kW model offers a higher rated heat output and DHW flow rate for larger households.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65935983804765,"sku":"7098603","price":1639.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens30kWB0KACombiBoiler7098602.jpg?v=1789548739"},{"product_id":"viessmann-vitodens-050-w-25kw-b0ka-combi-boiler-7098601","title":"Viessmann Vitodens 050-W 25kW B0KA Combi Boiler | 7098601","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 050-W 25kW B0KA Combi Boiler | 7098601 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 050-W\u003c\/strong\u003e 25kW combi is an attractively priced wall-mounted gas condensing boiler, built around the \u003cstrong\u003eInox-Radial stainless steel heat exchanger\u003c\/strong\u003e and modulating \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e used across the Vitodens range.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eAt \u003cstrong\u003e700mm high and just 300mm deep\u003c\/strong\u003e, it's compact enough to fit inside a standard kitchen cupboard while still delivering up to \u003cstrong\u003e97% gross seasonal efficiency\u003c\/strong\u003e, making it a strong value choice for smaller households.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e25kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombi output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e97%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eGross seasonal efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e1:4\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eModulation range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e12.2 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDHW flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e35kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e Approved for a hydrogen admixture of up to 20% by volume and tested to EN 15502, this Vitodens 050-W requires \u003cstrong\u003eno conversion kit for LPG\u003c\/strong\u003e — switching gas type is done entirely from the control unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003ehigh operational reliability\u003c\/strong\u003e and a long service life on a very small footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eModulating MatriX cylinder burner\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eConsumes \u003cstrong\u003erelatively little natural gas\u003c\/strong\u003e with lower CO2 emissions across a wide 1:4 modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral WiFi control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eBuilt-in wireless interface supports the \u003cstrong\u003eViCare app\u003c\/strong\u003e for remote heating and hot water control, with no separate modem required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact 700 x 400 x 300mm footprint\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eSmall enough to be \u003cstrong\u003efitted inside a kitchen cupboard\u003c\/strong\u003e, ideal for flats and space-constrained properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral instantaneous DHW heating\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eA plate heat exchanger provides direct \u003cstrong\u003ehot water on demand\u003c\/strong\u003e with a diverter valve, up to 12.2 l\/min flow.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eVariable speed circulation pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eThe integral high-efficiency pump adjusts its speed automatically, \u003cstrong\u003ereducing electricity consumption\u003c\/strong\u003e compared with fixed-speed pumps.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing combi (Type BPJD)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 19.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 17.1 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e25.4 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW flow rate\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e10.2 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eStandard seasonal efficiency (Hs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 97%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eModulation range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e1:4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eGas \u0026amp; Electrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas types\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eNatural gas and LPG (no conversion kit required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHydrogen compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 20% H2 blend\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eNatural gas supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e20 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eLPG supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e50 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e230V~, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e707mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e35kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeating flow\/return\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW\/cold water connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 1\/2\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e Fill and top-up water must meet Viessmann's water quality requirements (see VDI 2035 or local equivalent). From a water hardness of 20°dH and above, a water treatment system in the cold water supply is recommended to protect the plate heat exchanger from limescale build-up.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size property suits the 25kW Vitodens 050-W combi?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eA 25kW combi typically suits a 2-3 bedroom home with one bathroom, depending on radiator count and insulation standard — a heat loss calculation is the reliable way to confirm sizing.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler need a conversion kit for LPG?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eNo, the Vitodens 050-W runs on natural gas or LPG with the fuel type simply reconfigured at the control unit — no physical conversion kit is required.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this boiler run on a hydrogen gas blend?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, it's approved for operation with a hydrogen admixture of up to 20% by volume.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat flue system is required?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eOnly the Viessmann 60\/100mm concentric flue system, CE-designated as one structural unit with the boiler, may be used.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65936118022493,"sku":"7098601","price":1337.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens050-W30kWB0KACombinationBoiler.jpg?v=1789548697"},{"product_id":"viessmann-vitodens-100-w-35kw-b1kf-combi-boiler-7098714","title":"Viessmann Vitodens 100-W 35kW B1KF Combi Boiler | 7098714","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 100-W 35kW B1KF Combi Boiler | 7098714 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 100-W\u003c\/strong\u003e is the flagship wall-mounted gas condensing boiler in the Vitodens range, pairing the \u003cstrong\u003eMatriX-Plus gas burner\u003c\/strong\u003e with intelligent \u003cstrong\u003eLambda Pro combustion control\u003c\/strong\u003e and the corrosion-resistant Inox-Radial stainless steel heat exchanger.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThis 35kW combi variant delivers \u003cstrong\u003einstantaneous hot water on demand\u003c\/strong\u003e alongside central heating, making it a strong fit for larger households needing higher simultaneous hot water flow without a separate cylinder.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e35kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombi output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSeasonal efficiency (ηS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e17.04 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDHW flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e360mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDepth\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003eWiFi\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eBuilt-in connectivity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used, with maximum flue lengths varying by model — check the installation manual for the exact figure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e This boiler is approved for a hydrogen admixture of up to 20% by volume and can be configured for LPG entirely from the control unit — no separate conversion kit is required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMatriX-Plus burner with Lambda Pro\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003eextremely clean combustion\u003c\/strong\u003e and quiet operation, with automatic combustion control across the full modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHigh DHW flow rate\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers up to \u003cstrong\u003e17.04 l\/min\u003c\/strong\u003e at a 30K temperature rise, suiting higher simultaneous hot water demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eProvides \u003cstrong\u003ehigh operational reliability\u003c\/strong\u003e and a long service life on a compact footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eVariable speed high efficiency circulation pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eCuts pump \u003cstrong\u003epower consumption by up to 70%\u003c\/strong\u003e compared with a fixed-speed equivalent.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral WiFi with local app access\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eSupports the \u003cstrong\u003eViCare app\u003c\/strong\u003e for remote control, plus local commissioning access without an active internet connection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eEasy day-to-day operation via a \u003cstrong\u003ebacklit LCD touchscreen\u003c\/strong\u003e display.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing combi (Type B1KF-35)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 32.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 29.3 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eContinuous DHW output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e34.4 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW flow rate (ΔT 30K)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e17.04 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eStandard seasonal efficiency (Hs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 98%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eSeasonal central heating efficiency (ηS)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e94%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eSound power level (rated output)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e50.4 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eGas \u0026amp; Electrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas types\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eNatural gas and LPG (configured at control unit)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHydrogen compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 20% H2 blend\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eNatural gas supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e20 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eLPG supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e50 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e230V~, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003ePower consumption (delivered condition)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e110W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e360mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight (excl. water)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e35kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler flow and return\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eR 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCold water and DHW connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 1\/2\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eExpansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCapacity\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e8 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003ePre-charge pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e0.75 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eMax. permissible operating pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size property suits the 35kW Vitodens 100-W combi?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eA 35kW combi is typically suited to larger 4-5 bedroom homes or properties with higher simultaneous hot water demand — a heat loss calculation confirms exact sizing.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler require a mounting jig?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, a pre-plumbing jig or valves\/fittings pack for surface or flush mounting must be ordered separately.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow does the DHW output compare to the Vitodens 050-W 35kW combi?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eBoth deliver a similar continuous DHW output around 34-35kW, but the Vitodens 100-W offers a slightly higher DHW flow rate and wider modulation range.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs a WiFi modem needed for the ViCare app?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eNo, WiFi connectivity is integral to the control unit on this model.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942104179037,"sku":"7098714","price":1995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens100-WB1KFCombiBoiler.jpg?v=1789623665"},{"product_id":"viessmann-vitodens-100-w-25kw-b1hf-system-boiler-7988418","title":"Viessmann Vitodens 100-W 25kW B1HF System Boiler | 7988418","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 100-W 25kW B1HF System Boiler | 7988418 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 100-W\u003c\/strong\u003e is the flagship wall-mounted gas condensing boiler in the Vitodens range, pairing the \u003cstrong\u003eMatriX-Plus gas burner\u003c\/strong\u003e with intelligent \u003cstrong\u003eLambda Pro combustion control\u003c\/strong\u003e and the corrosion-resistant Inox-Radial stainless steel heat exchanger.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThis 25kW system boiler variant heats a separate hot water cylinder, offering a well-balanced output for \u003cstrong\u003emedium-sized homes\u003c\/strong\u003e with moderate heating and hot water demand.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e25kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSystem output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSeasonal efficiency (ηS)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e46 dB(A)\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSound level\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e360mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDepth\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003eWiFi\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eBuilt-in connectivity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used, with maximum flue lengths varying by model — check the installation manual for the exact figure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e This boiler is approved for a hydrogen admixture of up to 20% by volume and can be configured for LPG entirely from the control unit — no separate conversion kit is required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMatriX-Plus burner with Lambda Pro\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003eextremely clean combustion\u003c\/strong\u003e and quiet operation, with automatic combustion control across the full modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLow sound power output\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eRated at just \u003cstrong\u003e46 dB(A)\u003c\/strong\u003e at full output, keeping the boiler unobtrusive in living spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eProvides \u003cstrong\u003ehigh operational reliability\u003c\/strong\u003e and a long service life on a compact footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eVariable speed high efficiency circulation pump\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eCuts pump \u003cstrong\u003epower consumption by up to 70%\u003c\/strong\u003e compared with a fixed-speed equivalent.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral WiFi with local app access\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eSupports the \u003cstrong\u003eViCare app\u003c\/strong\u003e for remote control, plus local commissioning access without an active internet connection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eEasy day-to-day operation via a \u003cstrong\u003ebacklit LCD touchscreen\u003c\/strong\u003e display.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing system boiler (Type B1HF)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 25.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 23.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eContinuous cylinder heating output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 23.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eStandard seasonal efficiency (Hs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 98%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eSeasonal central heating efficiency (ηS)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e94%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eSound power level (rated output)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e46.1 dB(A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eGas \u0026amp; Electrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas types\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eNatural gas and LPG (configured at control unit)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHydrogen compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eUp to 20% H2 blend\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eNatural gas supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e20 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eLPG supply pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e50 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e230V~, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003ePower consumption (delivered condition)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e67W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e360mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight (excl. water)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e32kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler flow and return\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eR 3\/4\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCold water and DHW connections\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eG 1\/2\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eExpansion Vessel\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCapacity\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e8 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003ePre-charge pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e0.75 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eMax. permissible operating pressure\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat cylinder output does this boiler support?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eThe 25kW model supports a continuous cylinder heating output of 2.9 to 23.0 kW, suiting a standard indirect cylinder for a medium-sized home.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this boiler require a mounting jig?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, a pre-plumbing jig or valves\/fittings pack for surface or flush mounting must be ordered separately.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow quiet is this boiler in operation?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eAt its rated output the 25kW model has a sound power level of 46.1 dB(A), and drops to 31.9 dB(A) at partial load — among the quietest in its class.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this boiler be used in a multi-boiler cascade installation?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, a multiple connection variant (B1HF-M) is available for vertical multiple connection or horizontal cascade setups.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942110568797,"sku":"7988418","price":1895.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens100-WB1HFSystemBoiler7098715.jpg?v=1789623898"},{"product_id":"viessmann-vitodens-050-w-19kw-b0ha-system-boiler-7098666","title":"Viessmann Vitodens 050-W 19kW B0HA System Boiler","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 050-W 19kW B0HA System Boiler | 7098666 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 050-W\u003c\/strong\u003e 19kW system boiler is an attractively priced wall-mounted gas condensing boiler designed to work with a separate hot water cylinder, sharing the same \u003cstrong\u003eInox-Radial heat exchanger\u003c\/strong\u003e and \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e as the rest of the Vitodens 050-W range.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eCompact at \u003cstrong\u003e700mm high and 300mm deep\u003c\/strong\u003e, it suits smaller properties with a cylinder-fed hot water system, or replacement projects where an existing cylinder is being retained.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e19kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSystem output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003e4-pipe\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSystem configuration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e700mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eHeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e300mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDepth\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003eWiFi\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eConnectivity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e A ViCare Thermostat (load compensation) or an outdoor temperature sensor (weather compensation) will typically be required to complete this installation — the two accessories are not intended to be used together on the same heating circuit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003ehigh operational reliability\u003c\/strong\u003e and a long service life on a compact footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eModulating MatriX cylinder burner\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eConsumes \u003cstrong\u003erelatively little natural gas\u003c\/strong\u003e with lower CO2 emissions across the boiler's modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral WiFi control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eBuilt-in wireless interface supports the \u003cstrong\u003eViCare app\u003c\/strong\u003e for remote heating control, with no separate modem required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact 700 x 400 x 300mm footprint\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eSmall enough to be \u003cstrong\u003efitted inside a kitchen cupboard\u003c\/strong\u003e, ideal for flats and space-constrained properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eVariable speed circulation pump and 3-way valve\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eIntegral high-efficiency pump and valve are \u003cstrong\u003efully plumbed and wired\u003c\/strong\u003e from the factory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLPG compatible with no conversion kit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eThe gas type is reconfigured entirely at the \u003cstrong\u003econtrol unit\u003c\/strong\u003e, avoiding a separate LPG conversion kit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing system boiler (Type BPJD)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 19.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 17.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eERP efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e92% (Class A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eGas \u0026amp; Electrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas types\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eNatural gas and LPG (no conversion kit required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e230V~, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eStandard Delivery\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBurner\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eModulating, fan-assisted premix burner with Lambda Pro\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eControl unit\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eIntegral WiFi interface\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCirculation pump \u0026amp; valve\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eVariable speed high efficiency pump and 3-way valve\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eExpansion vessel\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e8 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWall mounting bracket\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eIncluded, fully plumbed and wired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat's the difference between the system boiler and the combi version?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eThe system boiler heats a separate hot water cylinder rather than providing instantaneous hot water directly, and is used where a stored hot water solution suits the property — such as multi-bathroom homes or where mains water pressure is low.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a cylinder to use this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, a system boiler requires a compatible unvented or vented hot water cylinder connected via the 4-pipe configuration to provide domestic hot water.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a ViCare Thermostat with this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eA ViCare Thermostat for load compensation, or an outdoor sensor for weather compensation, is generally recommended to complete the control setup and meet Boiler Plus requirements — the two should not be combined on the same circuit.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this boiler suitable for LPG?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, LPG compatibility is built in and configured at the control unit, with no separate conversion kit required.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942127968605,"sku":"7228605\/7098666","price":1370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens050-WB0HASystemBoiler.jpg?v=1789624591"},{"product_id":"viessmann-vitodens-050-w-25kw-b0ha-system-boiler-7098667","title":"Viessmann Vitodens 050-W 25kW B0HA System Boiler | 7098667","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 050-W 25kW B0HA System Boiler | 7098667 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 050-W\u003c\/strong\u003e 25kW system boiler is an attractively priced wall-mounted gas condensing boiler designed to work with a separate hot water cylinder, sharing the same \u003cstrong\u003eInox-Radial heat exchanger\u003c\/strong\u003e and \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e as the rest of the Vitodens 050-W range.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eCompact at \u003cstrong\u003e700mm high and 300mm deep\u003c\/strong\u003e, it suits mid-sized properties with a cylinder-fed hot water system, or replacement projects where an existing cylinder is being retained.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e25kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSystem output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003e4-pipe\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eSystem configuration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e700mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eHeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e300mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDepth\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003eWiFi\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eConnectivity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e A ViCare Thermostat (load compensation) or an outdoor temperature sensor (weather compensation) will typically be required to complete this installation — the two accessories are not intended to be used together on the same heating circuit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003ehigh operational reliability\u003c\/strong\u003e and a long service life on a compact footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eModulating MatriX cylinder burner\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eConsumes \u003cstrong\u003erelatively little natural gas\u003c\/strong\u003e with lower CO2 emissions across the boiler's modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIntegral WiFi control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eBuilt-in wireless interface supports the \u003cstrong\u003eViCare app\u003c\/strong\u003e for remote heating control, with no separate modem required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact 700 x 400 x 300mm footprint\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eSmall enough to be \u003cstrong\u003efitted inside a kitchen cupboard\u003c\/strong\u003e, ideal for flats and space-constrained properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eVariable speed circulation pump and 3-way valve\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eIntegral high-efficiency pump and valve are \u003cstrong\u003efully plumbed and wired\u003c\/strong\u003e from the factory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLPG compatible with no conversion kit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eThe gas type is reconfigured entirely at the \u003cstrong\u003econtrol unit\u003c\/strong\u003e, avoiding a separate LPG conversion kit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing system boiler (Type BPJD)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 25.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 22.5 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eERP efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e92% (Class A)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eGas \u0026amp; Electrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas types\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eNatural gas and LPG (no conversion kit required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eElectrical supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e230V~, 50Hz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eStandard Delivery\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBurner\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eModulating, fan-assisted premix burner with Lambda Pro\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eControl unit\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eIntegral WiFi interface\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCirculation pump \u0026amp; valve\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eVariable speed high efficiency pump and 3-way valve\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eExpansion vessel\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e8 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWall mounting bracket\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eIncluded, fully plumbed and wired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat's the difference between the system boiler and the combi version?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eThe system boiler heats a separate hot water cylinder rather than providing instantaneous hot water directly, suiting multi-bathroom homes or properties where a stored hot water solution is preferred.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDo I need a cylinder to use this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, a system boiler requires a compatible unvented or vented hot water cylinder connected via the 4-pipe configuration to provide domestic hot water.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow does the 25kW system boiler compare to the 19kW model?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eBoth share the same footprint, controls and heat exchanger technology; the 25kW model delivers a higher rated heat output, suiting a larger heating circuit or higher heat loss property.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this boiler suitable for LPG?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, LPG compatibility is built in and configured at the control unit, with no separate conversion kit required.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942128296285,"sku":"7098667","price":1450.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens050-WB0HASystemBoiler.jpg?v=1789624591"},{"product_id":"viessmann-vitodens-100-w-25kw-b1ga-heat-only-boiler-7098664","title":"Viessmann Vitodens 100-W 25kW B1GA Heat Only Boiler | 7098664","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 100-W 25kW B1GA Heat Only Boiler | 7098664 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 100-W B1GA\u003c\/strong\u003e is a heat-only (regular) gas condensing boiler, purpose-built for existing \u003cstrong\u003eopen vented or sealed heating systems\u003c\/strong\u003e where the property already has a separate hot water cylinder and feed\/expansion arrangement in place.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith its \u003cstrong\u003ecompact 375mm-wide, 285mm-deep casing\u003c\/strong\u003e and light weight, this 25kW model is well suited to bungalow replacements and other properties where the existing cylinder and pipework are being retained rather than upgraded to a system boiler.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e25kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eHeat only output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eErP efficiency (Hs)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e23kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e285mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDepth\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003eLambda Pro\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombustion control\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used, with maximum flue lengths varying by model — check the installation manual for the exact figure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This is a heat-only appliance — it provides central heating output only and does not include a hot water cylinder or DHW heating function. It's compatible with any existing cylinder, open vented or sealed, but is \u003cstrong\u003enot compatible with solar thermal panels\u003c\/strong\u003e feeding the cylinder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIdeal for open vent or sealed system upgrades\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003ePurpose-designed for \u003cstrong\u003eexisting heating systems\u003c\/strong\u003e where the cylinder and pipework are being retained during a boiler swap.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLambda Pro combustion control\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eProvides \u003cstrong\u003eexceptional performance, high efficiency and low emissions\u003c\/strong\u003e across the boiler's modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact, lightweight casing\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eAt just \u003cstrong\u003e23kg\u003c\/strong\u003e and a slim 375mm width, it suits tight cupboard spaces and bungalow-style installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003ecorrosion resistance\u003c\/strong\u003e and a long operational life on a compact footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOperating status, temperature and heating settings are all managed via the \u003cstrong\u003eLCD touch screen display\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eWiFi ready with optional modem\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eInternet capability for the \u003cstrong\u003eViCare app\u003c\/strong\u003e is available via an optional WiFi modem accessory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing heat only boiler (Type B1GA)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 25.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 22.5 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eErP efficiency (Hs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e92%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e600mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e375mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e285mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e23kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eStandard Delivery\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBurner\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eModulating and fan-assisted MatriX-Plus burner\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eControl\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eConstant temperature and weather-compensated control unit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas isolation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas shut-off valve included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eWall mounting bracket, fully plumbed and wired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat does 'heat only' mean for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eA heat-only (regular) boiler provides central heating output alone — it does not generate hot water directly and relies on an existing separate hot water cylinder for DHW.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow does the 25kW compare to the 32kW heat-only model?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eBoth share the same control platform and heat exchanger technology; the 25kW model is slightly slimmer at 285mm deep versus 340mm on the 32kW, and delivers a lower maximum heat output suited to smaller heating circuits.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs a WiFi modem included as standard?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eNo, WiFi\/ViCare app connectivity requires an optional modem accessory on this heat-only model.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWill this boiler work with my existing open vented system?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, the Vitodens 100-W B1GA is designed to be compatible with existing open vented or sealed heating systems and any compatible cylinder type, except solar-fed cylinders.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942129344861,"sku":"7098664","price":1670.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens100-W25kWB1GAHeatOnlyBoiler.jpg?v=1789625065"},{"product_id":"viessmann-vitodens-100-w-32kw-b1ga-heat-only-boiler-7098665","title":"Viessmann Vitodens 100-W 32kW B1GA Heat Only Boiler | 7098665","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 100-W 32kW B1GA Heat Only Boiler | 7098665 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 100-W B1GA\u003c\/strong\u003e is a heat-only (regular) gas condensing boiler, purpose-built for existing \u003cstrong\u003eopen vented or sealed heating systems\u003c\/strong\u003e where the property already has a separate hot water cylinder and feed\/expansion arrangement in place.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith its \u003cstrong\u003ecompact 375mm-wide, 285mm-deep casing\u003c\/strong\u003e and light weight, this 32kW model is well suited to bungalow replacements and other properties where the existing cylinder and pipework are being retained rather than upgraded to a system boiler.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e32kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eHeat only output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eErP efficiency (Hs)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e23kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e340mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDepth\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e\u003cspan style=\"color:#008377CF;\"\u003eLambda Pro\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombustion control\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used, with maximum flue lengths varying by model — check the installation manual for the exact figure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This is a heat-only appliance — it provides central heating output only and does not include a hot water cylinder or DHW heating function. It's compatible with any existing cylinder, open vented or sealed, but is \u003cstrong\u003enot compatible with solar thermal panels\u003c\/strong\u003e feeding the cylinder.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIdeal for open vent or sealed system upgrades\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003ePurpose-designed for \u003cstrong\u003eexisting heating systems\u003c\/strong\u003e where the cylinder and pipework are being retained during a boiler swap.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLambda Pro combustion control\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eProvides \u003cstrong\u003eexceptional performance, high efficiency and low emissions\u003c\/strong\u003e across the boiler's modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact, lightweight casing\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eAt just \u003cstrong\u003e23kg\u003c\/strong\u003e and a slim 375mm width, it suits tight cupboard spaces and bungalow-style installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eDelivers \u003cstrong\u003ecorrosion resistance\u003c\/strong\u003e and a long operational life on a compact footprint.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTouchscreen control unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOperating status, temperature and heating settings are all managed via the \u003cstrong\u003eLCD touch screen display\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eWiFi ready with optional modem\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eInternet capability for the \u003cstrong\u003eViCare app\u003c\/strong\u003e is available via an optional WiFi modem accessory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing heat only boiler (Type B1GA)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e3.2 – 32.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2.9 – 30.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eErP efficiency (Hs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e92%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e600mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e375mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e340mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e23kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eStandard Delivery\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBurner\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eModulating and fan-assisted MatriX-Plus burner\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eControl\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eConstant temperature and weather-compensated control unit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eGas isolation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas shut-off valve included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eWall mounting bracket, fully plumbed and wired\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat does 'heat only' mean for this boiler?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eA heat-only (regular) boiler provides central heating output alone — it does not generate hot water directly and relies on an existing separate hot water cylinder for DHW.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this boiler be used with a solar thermal cylinder?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eNo, Viessmann specifies this model as not compatible with solar panel-fed cylinders.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs a WiFi modem included as standard?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eNo, WiFi\/ViCare app connectivity requires an optional modem accessory on this heat-only model — it isn't built in as standard.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWill this boiler work with my existing open vented system?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, the Vitodens 100-W B1GA is designed to be compatible with existing open vented or sealed heating systems and any compatible cylinder type.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942130983261,"sku":"7098665","price":2195.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens100-W25kWB1GAHeatOnlyBoiler.jpg?v=1789625065"},{"product_id":"viessmann-vitodens-025-w-24kw-bpkb-combi-boiler-7098278","title":"Viessmann Vitodens 025-W 24kW BPKB Combi Boiler | 7098278","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 025-W 24kW BPKB Combi Boiler | 7098278 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 025-W\u003c\/strong\u003e 24kW combi is a compact, pre-commissioned gas condensing boiler designed for living areas with limited space, sharing the same \u003cstrong\u003eInox-Radial stainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003eMatriX-Plus burner\u003c\/strong\u003e as the rest of the Vitodens range.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith \u003cstrong\u003eno side clearance required\u003c\/strong\u003e and all connections accessible from the front, this entry point to the Vitodens combi range is built for quick installation in smaller apartments and single-family homes.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombi output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eErP space heating efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e1:5\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eModulation range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e12 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDHW flow rate (ΔT 35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e34kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e Registering the installation on the Viessmann installer portal (VPlus) within 30 days extends the standard 2-year warranty to \u003cstrong\u003e5 years\u003c\/strong\u003e, alongside a 10-year warranty on the Inox-Radial heat exchanger.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePre-commissioned for fast installation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOnly \u003cstrong\u003etwo button pushes\u003c\/strong\u003e are needed to complete commissioning, minimising time on site.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eNo side clearance required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eAll components and connections are accessible \u003cstrong\u003efrom the front\u003c\/strong\u003e, making it well suited to tight cupboard installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eProvides \u003cstrong\u003ehigh corrosion resistance\u003c\/strong\u003e and a long operational life, backed by a 10-year heat exchanger warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMatriX-Plus burner system\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eEnsures \u003cstrong\u003econsistently clean combustion\u003c\/strong\u003e across a 1:5 modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact 700 x 400 x 300mm size\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOne of the \u003cstrong\u003esmallest wall-mounted boilers\u003c\/strong\u003e in its output class, ideal for apartments and modernisation projects.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLow operating noise\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eRated at \u003cstrong\u003e48 dB(A)\u003c\/strong\u003e for the 24kW model, keeping the boiler unobtrusive in living spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing combi (Type BPKB-24)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e5.0 – 20.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e4.5 – 19.2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCombi DHW output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e24kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW draw-off rate (ΔT 35°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e12 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eErP space heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e92%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eModulation range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e1:5\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e34kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eStandard warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRegistered warranty (VPlus)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e5 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeat exchanger warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e10 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat size home suits the 24kW Vitodens 025-W?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eA 24kW combi is generally suited to a flat or smaller 2-3 bedroom home with a single bathroom — a proper heat loss calculation against radiator count and insulation standard is the reliable way to confirm sizing.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this boiler pre-commissioned?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, the Vitodens 025-W range is supplied pre-commissioned, with Viessmann stating only two button presses are needed to complete the installation process.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat warranty does the 24kW model carry?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003e2 years as standard, extending to 5 years when the installation is registered on the Viessmann installer portal (VPlus) within 30 days, plus a 10-year warranty on the heat exchanger.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes the Vitodens 025-W support weather compensation?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, the control unit is weather compensation and OpenTherm compatible when paired with the appropriate outdoor sensor or room control.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942131900765,"sku":"7098278","price":875.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens025-WBPKBCombiBoiler7098278.jpg?v=1789625774"},{"product_id":"viessmann-vitodens-025-w-28kw-bpkb-combi-boiler-7098279","title":"Viessmann Vitodens 025-W 28kW BPKB Combi Boiler | 7098279","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 025-W 28kW BPKB Combi Boiler | 7098279 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 025-W\u003c\/strong\u003e is a compact, pre-commissioned gas condensing combi boiler built for living areas with limited space, combining the same \u003cstrong\u003eInox-Radial stainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003eMatriX-Plus burner\u003c\/strong\u003e technology found across the wider Vitodens range.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith no side clearance required and all connections accessible from the front, the 28kW model is designed to be \u003cstrong\u003equick and straightforward to install\u003c\/strong\u003e — Viessmann states that only two button presses are needed to complete commissioning on a pre-commissioned unit.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e28kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombi output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eErP space heating efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e1:5\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eModulation range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e12 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDHW flow rate (ΔT 35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e34kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e Registering the installation on the Viessmann installer portal (VPlus) within 30 days extends the standard 2-year warranty to \u003cstrong\u003e5 years\u003c\/strong\u003e, alongside a 10-year warranty on the Inox-Radial heat exchanger.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePre-commissioned for fast installation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOnly \u003cstrong\u003etwo button pushes\u003c\/strong\u003e are needed to complete commissioning, minimising time on site.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eNo side clearance required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eAll components and connections are accessible \u003cstrong\u003efrom the front\u003c\/strong\u003e, making it well suited to tight cupboard installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eProvides \u003cstrong\u003ehigh corrosion resistance\u003c\/strong\u003e and a long operational life, backed by a 10-year heat exchanger warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMatriX-Plus burner system\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eEnsures \u003cstrong\u003econsistently clean combustion\u003c\/strong\u003e across a 1:5 modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact 700 x 400 x 300mm size\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOne of the \u003cstrong\u003esmallest wall-mounted boilers\u003c\/strong\u003e in its output class, ideal for apartments and modernisation projects.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLow operating noise\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eRated at \u003cstrong\u003e51 dB(A)\u003c\/strong\u003e for the 28kW model, keeping the boiler unobtrusive in living spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing combi (Type BPKB-28)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e5.0 – 25.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e4.5 – 22.7 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCombi DHW output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e28kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW draw-off rate (ΔT 35°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e12 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eErP space heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e92%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eModulation range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e1:5\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e34kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eStandard warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRegistered warranty (VPlus)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e5 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeat exchanger warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e10 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow is the 28kW model different from the 24kW Vitodens 025-W?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eBoth share the same footprint, control system and heat exchanger technology; the 28kW model simply delivers a higher rated heat output (up to 25kW at 50\/30°C) and DHW output, suited to slightly larger properties or higher simultaneous hot water demand.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs the Vitodens 025-W suitable for a large family home?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eIt's positioned by Viessmann as a compact solution for smaller living areas, apartments and modernisation projects — for larger properties with higher heat loss, the Vitodens 050-W or 100-W ranges offer higher output options.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes registering the boiler extend the warranty?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, registering the installation on the Viessmann installer portal (VPlus) within 30 days extends the standard 2-year warranty to 5 years, with a 10-year warranty on the heat exchanger.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat flue system does the Vitodens 025-W use?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eIt uses the same 60\/100mm concentric flue system as the rest of the Vitodens wall-mounted range, CE-designated as one structural unit with the boiler.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942132752733,"sku":"7098279","price":930.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens025-WBPKBCombiBoiler7098278.jpg?v=1789625774"},{"product_id":"baxi-424-combi-2-1-24kw-gas-boiler-7872835-erp-a-rated","title":"Baxi 424 Combi 2.1 24kW Gas Boiler | 7872835 | ErP A Rated","description":"\u003c!-- SEO Product Name: Baxi 424 Combi 2.1 24kW Gas Boiler | 7872835 | ErP A Rated --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBaxi 424 Combi 2.1\u003c\/strong\u003e is a 24kW combi boiler built for compact UK homes that need reliable heating and hot water without a bulky footprint. Part of Baxi's revamped 400 Combi 2.1 range, it is \u003cstrong\u003elightweight, quiet and compact enough to fit inside a 290mm deep cupboard\u003c\/strong\u003e, making it a practical replacement boiler for flats, terraces and small-to-medium properties.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eInside, a \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003ebrass hydraulics\u003c\/strong\u003e are paired with an \u003cstrong\u003eErP A energy efficiency rating\u003c\/strong\u003e for both space heating and hot water, so running costs stay low while durability stays high. The boiler runs on \u003cstrong\u003enatural gas or LPG without needing a separate conversion kit\u003c\/strong\u003e, giving installers flexibility on a single unit code.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eEveryday reliability features include a \u003cstrong\u003epre-heated condensate trap\u003c\/strong\u003e to guard against freezing in cold weather, a \u003cstrong\u003ecombined pressure relief valve with separate drain\u003c\/strong\u003e for safer, faster drain-downs during servicing, and an \u003cstrong\u003eexternal analogue pressure gauge\u003c\/strong\u003e that lets homeowners top up system pressure themselves, cutting down on avoidable call-outs.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e24kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eDHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003eA\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eErP Efficiency Rating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e10.2 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eDHW Flow Rate (ΔT 35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e28kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eInstaller Lift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e7L\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eIntegral Expansion Vessel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:4px; font-size:14px;\"\u003eGood to Know\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B;\"\u003eThis is the \u003cstrong\u003e24kW model (424)\u003c\/strong\u003e in the Baxi 400 Combi 2.1 range. The same platform is also available as the 30kW (430 Combi 2.1) and 36kW (436 Combi 2.1) for larger heat and hot water demand — check property size and radiator count before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eDual Fuel Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eWorks on \u003cstrong\u003enatural gas or LPG without a conversion kit\u003c\/strong\u003e, so the same unit code covers both fuel types on site.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eCompact \u0026amp; Lightweight\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eAt \u003cstrong\u003e395 x 700 x 285mm\u003c\/strong\u003e and a 28kg installer lift weight, it fits \u003cstrong\u003e290mm deep cupboards\u003c\/strong\u003e and is easy to manoeuvre into place single-handed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eRobust Build\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eA \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003ebrass hydraulics\u003c\/strong\u003e are used throughout for long-term corrosion resistance and reliability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eWinter-Ready Condensate\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eA \u003cstrong\u003epre-heated condensate trap\u003c\/strong\u003e reduces the risk of the condensate pipe freezing during cold snaps, helping avoid winter lockouts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eSafer Servicing\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eThe \u003cstrong\u003ecombined pressure relief valve with a separate drain\u003c\/strong\u003e allows a faster, safer boiler drain-down when repairs or servicing are needed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eSmart Control Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eCompatible with the \u003cstrong\u003eBaxi uSense 2 Smart Room Thermostat\u003c\/strong\u003e and the \u003cstrong\u003eBaxi Easy-Flue system\u003c\/strong\u003e for quicker, safer one-person flue installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#E0942A; margin-bottom:4px; font-size:14px;\"\u003ePlease Note\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B;\"\u003eBoiler installation, commissioning and any gas or LPG conversion work must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with current Building Regulations and Benchmark requirements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eIdentification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eManufacturer Part Number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e7872835\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eProduct Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eBaxi 400 Combi 2.1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e424 Combi 2.1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eGTIN \/ Barcode\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e5033313046194\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eGas Combi Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eGas \u0026amp; Efficiency\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eFuel Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eNatural Gas or LPG (no conversion kit required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eInlet Supply Pressure, Natural Gas (nominal)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e20 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum Gas Rate, G20 (Qmax)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e2.61 m³\/hr\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Input CH, Max Gross (QnHs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e20.6 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Input CH, Min Gross (QnHs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e4.9 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Non-Condensing, Max (Pn)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e20 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Non-Condensing, Min (Pn)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e4.8 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Condensing, Max (Pnc)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e21.8 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Condensing, Min (Pnc)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e5.2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Input DHW, Max Gross (QnwHs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e27.4 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output DHW, Max\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e24 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eWater Heating Efficiency Class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eSpace Heating Efficiency Class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eHydraulic\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum DHW Flow Rate (ΔT 35°C rise)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e10.2 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMinimum DHW Flow Rate Required\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e2 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMinimum Operating DHW Pressure Required\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eIntegral Expansion Vessel Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e7 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum CH System Capacity\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e100 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eIntegral Automatic Bypass\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003ePermanent Live Required\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eExternal Fuse Rating (connection board)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eF0.5A L250VP\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003ePump Overrun\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eIntegral Boiler-Only Frost Thermostat\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eDimensions \u0026amp; Weight\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e395mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e285mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eSide Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e2.5mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eUpper Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e178mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eLower Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e150mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eFront Clearance (operation \/ servicing)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e5mm \/ 450mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eInstaller Lift Weight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e28kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eCompatibility \u0026amp; Warranty\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eSmart Thermostat Compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eBaxi uSense 2 Smart Room Thermostat\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eFlue System Compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eBaxi Easy-Flue (internal fit, short \u0026amp; long)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e5 years parts and labour\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat is the output of the Baxi 424 Combi 2.1?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eThe Baxi 424 Combi 2.1 (MPN 7872835) has a \u003cstrong\u003e24kW domestic hot water output\u003c\/strong\u003e, with a condensing central heating output of up to \u003cstrong\u003e21.8kW\u003c\/strong\u003e. It suits smaller to medium UK homes with modest hot water demand.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eCan this boiler run on LPG?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eYes. The Baxi 424 Combi 2.1 is designed to work on \u003cstrong\u003enatural gas or LPG without requiring a separate conversion kit\u003c\/strong\u003e, though installation and any fuel-related setup must still be carried out by a Gas Safe registered engineer.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWill it fit in a standard kitchen cupboard?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eThe boiler measures \u003cstrong\u003e395mm (W) x 700mm (H) x 285mm (D)\u003c\/strong\u003e and is designed to fit within a \u003cstrong\u003e290mm deep cupboard\u003c\/strong\u003e, making it suitable for typical UK kitchen and utility installations.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat smart thermostat is this boiler compatible with?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eThe Baxi 424 Combi 2.1 is compatible with the \u003cstrong\u003eBaxi uSense 2 Smart Room Thermostat\u003c\/strong\u003e, which allows heating schedules to be controlled remotely via a smartphone app.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat warranty does the Baxi 424 Combi 2.1 come with?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eIt carries a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e as standard, subject to annual servicing and registration in line with Baxi's terms and conditions.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eHow does the pre-heated condensate trap help in winter?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eThe \u003cstrong\u003epre-heated condensate trap\u003c\/strong\u003e reduces the risk of the condensate discharge pipe freezing in cold weather, which is one of the most common causes of boiler lockouts during winter.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"Default Title","offer_id":66013318807901,"sku":"7872835","price":870.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Baxi-400-Combi-2.1-NG-or-LPG-Boiler.jpg?v=1783688218"},{"product_id":"baxi-436-combi-2-1-36kw-gas-boiler-7872837-erp-a-rated","title":"Baxi 436 Combi 2.1 36kW Gas Boiler | 7872837 | ErP A Rated","description":"\u003c!-- SEO Product Name: Baxi 436 Combi 2.1 36kW Gas Boiler | 7872837 | ErP A Rated --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eBaxi 436 Combi 2.1\u003c\/strong\u003e is the highest-output model in Baxi's revamped 400 Combi 2.1 range, delivering a \u003cstrong\u003e36kW domestic hot water output\u003c\/strong\u003e for medium to larger UK homes with higher hot water demand — multiple bathrooms, larger families, or higher-flow showers. Despite the increased output, it remains \u003cstrong\u003elightweight and compact enough to fit inside a 290mm deep cupboard\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eInside, a \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003ebrass hydraulics\u003c\/strong\u003e are paired with an \u003cstrong\u003eErP A energy efficiency rating\u003c\/strong\u003e for both space heating and hot water. The boiler runs on \u003cstrong\u003enatural gas or LPG without needing a separate conversion kit\u003c\/strong\u003e, and is \u003cstrong\u003esolar compatible\u003c\/strong\u003e for pre-heated system water.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eEveryday reliability features include a \u003cstrong\u003epre-heated condensate trap\u003c\/strong\u003e to guard against freezing in cold weather, a \u003cstrong\u003ecombined pressure relief valve with separate drain\u003c\/strong\u003e for safer, faster drain-downs during servicing, and an \u003cstrong\u003eexternal analogue pressure gauge\u003c\/strong\u003e that lets homeowners top up system pressure themselves, cutting down on avoidable call-outs.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e36kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eDHW Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003eA\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eErP Efficiency Rating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e15.0 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eDHW Flow Rate (ΔT 35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e30kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eInstaller Lift Weight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e7L\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eIntegral Expansion Vessel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:8px; padding:16px 10px; text-align:center; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:bold; color:#008377CF;\"\u003e5 Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#5B5B5B; margin-top:4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:4px; font-size:14px;\"\u003eGood to Know\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B;\"\u003eThis is the \u003cstrong\u003e36kW model (436)\u003c\/strong\u003e — the highest output in the Baxi 400 Combi 2.1 range. The same platform is also available as the 24kW (424 Combi 2.1) and 30kW (430 Combi 2.1) for smaller properties with lower hot water demand — check property size and radiator count before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eHigh Output for Bigger Homes\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eA \u003cstrong\u003e36kW DHW output\u003c\/strong\u003e and \u003cstrong\u003e15.0 l\/min flow rate at ΔT 35°C\u003c\/strong\u003e make this the top-spec choice in the range for larger households or higher hot water demand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eDual Fuel Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eWorks on \u003cstrong\u003enatural gas or LPG without a conversion kit\u003c\/strong\u003e, so the same unit code covers both fuel types on site.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eCompact Despite the Output\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eAt \u003cstrong\u003e395 x 700 x 285mm\u003c\/strong\u003e it still fits \u003cstrong\u003e290mm deep cupboards\u003c\/strong\u003e, keeping installation flexibility even at the highest output in the range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eRobust Build\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eA \u003cstrong\u003estainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003ebrass hydraulics\u003c\/strong\u003e are used throughout for long-term corrosion resistance and reliability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eWinter-Ready Condensate\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eA \u003cstrong\u003epre-heated condensate trap\u003c\/strong\u003e reduces the risk of the condensate pipe freezing during cold snaps, helping avoid winter lockouts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px 18px; margin:6px;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eSmart Control Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#3D3D3D; line-height:1.55;\"\u003eCompatible with the \u003cstrong\u003eBaxi uSense 2 Smart Room Thermostat\u003c\/strong\u003e and the \u003cstrong\u003eBaxi Easy-Flue system\u003c\/strong\u003e for quicker, safer one-person flue installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-weight:bold; color:#E0942A; margin-bottom:4px; font-size:14px;\"\u003ePlease Note\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B;\"\u003eBoiler installation, commissioning and any gas or LPG conversion work must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with current Building Regulations and Benchmark requirements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eIdentification\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eManufacturer Part Number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e7872837\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eProduct Range\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eBaxi 400 Combi 2.1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e436 Combi 2.1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eBoiler Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eGas Combi Boiler\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eGas \u0026amp; Efficiency\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eFuel Type\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eNatural Gas or LPG (no conversion kit required)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eInlet Supply Pressure, Natural Gas (nominal)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e20 mbar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum Gas Rate, G20 (Qmax)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e3.9 m³\/hr\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Input CH, Max Gross (QnHs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e25.7 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Input CH, Min Gross (QnHs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e7.2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Non-Condensing, Max (Pn)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e25 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Non-Condensing, Min (Pn)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e7.2 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Condensing, Max (Pnc)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e27.1 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output CH Condensing, Min (Pnc)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e7.6 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Input DHW, Max Gross (QnwHs)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e36.9 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeat Output DHW, Max\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e36 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eWater Heating Efficiency Class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eSpace Heating Efficiency Class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eNOx Class\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eClass 6\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eHydraulic\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum DHW Flow Rate (ΔT 35°C rise)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e15.0 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMinimum DHW Flow Rate Required\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e2 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMinimum Operating DHW Pressure Required\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e0.5 bar\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eIntegral Expansion Vessel Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e7 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum CH System Capacity\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e100 litres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eIntegral Automatic Bypass\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eSolar Compatible\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003ePermanent Live Required\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eExternal Fuse Rating (connection board)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eF0.5A L250VP\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003ePump Overrun\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eIntegral Boiler-Only Frost Thermostat\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eYes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eDimensions, Weight \u0026amp; Noise\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e395mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e285mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eSide Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e2.5mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eUpper Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e178mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eLower Clearance\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e150mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eFront Clearance (operation \/ servicing)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e5mm \/ 450mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eInstaller Lift Weight\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e30kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eNoise Level\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e51dBA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:10px 16px; border-radius:6px 6px 0 0; font-size:15px; margin-top:18px;\"\u003eFlue \u0026amp; Compatibility\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum Horizontal Flue, 100mm\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e10m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum Horizontal Flue, 125mm\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e20m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum Vertical Flue, 100mm\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e10m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eMaximum Vertical Flue, 125mm\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e20m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eSmart Thermostat Compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eBaxi uSense 2 Smart Room Thermostat\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eFlue System Compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003eBaxi Easy-Flue (internal fit, short \u0026amp; long)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; padding:10px 16px; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:1 1 55%; color:#5B5B5B; font-size:14px;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 45%; color:#2B2B2B; font-size:14px; font-weight:bold;\"\u003e5 years parts and labour\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat is the output of the Baxi 436 Combi 2.1?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eThe Baxi 436 Combi 2.1 (MPN 7872837) has a \u003cstrong\u003e36kW domestic hot water output\u003c\/strong\u003e — the highest in the 400 Combi 2.1 range — with a condensing central heating output of up to \u003cstrong\u003e27.1kW\u003c\/strong\u003e. It suits medium to larger UK homes with higher hot water demand.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eIs the 436 a good fit for a home with multiple bathrooms?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eYes. With a \u003cstrong\u003e15.0 l\/min DHW flow rate at ΔT 35°C\u003c\/strong\u003e, the 436 is the highest-flow model in the range, making it better suited to properties with multiple bathrooms or higher simultaneous hot water demand than the 424 or 430 models.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eCan this boiler run on LPG?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eYes. The Baxi 436 Combi 2.1 is designed to work on \u003cstrong\u003enatural gas or LPG without requiring a separate conversion kit\u003c\/strong\u003e, though installation and any fuel-related setup must still be carried out by a Gas Safe registered engineer.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWill it fit in a standard kitchen cupboard?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eThe boiler measures \u003cstrong\u003e395mm (W) x 700mm (H) x 285mm (D)\u003c\/strong\u003e and is designed to fit within a \u003cstrong\u003e290mm deep cupboard\u003c\/strong\u003e, despite being the highest-output model in the range.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat smart thermostat is this boiler compatible with?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eThe Baxi 436 Combi 2.1 is compatible with the \u003cstrong\u003eBaxi uSense 2 Smart Room Thermostat\u003c\/strong\u003e, which allows heating schedules to be controlled remotely via a smartphone app.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"background:#FFFFFF; border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:bold; padding:12px 16px; cursor:pointer; font-size:15px; list-style:none;\"\u003eWhat warranty does the Baxi 436 Combi 2.1 come with?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.6;\"\u003eIt carries a \u003cstrong\u003e5-year parts and labour warranty\u003c\/strong\u003e as standard, subject to annual servicing and registration in line with Baxi's terms and conditions.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"Default Title","offer_id":66013324902749,"sku":"7872837","price":1099.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Baxi-400-Combi-2.1-NG-or-LPG-Boiler.jpg?v=1783688218"},{"product_id":"navien-ncb700-on-42kw-combi-boiler-pncb7000042l001-12-year-warranty","title":"Navien NCB700 ON 42kW Combi Boiler | PNCB7000042L001 | 12-Year Warranty","description":"\u003c!-- SEO Product Name: Navien NCB700 ON 42kW Combi Boiler | PNCB7000042L001 | 12-Year Warranty --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; color:#1a1a1a; line-height:1.6;\"\u003e\n\n  \u003cp style=\"margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eNavien NCB700-2S+\/42K\u003c\/strong\u003e is a wall-hung, room-sealed gas condensing \u003cstrong\u003eCombi Crossover boiler\u003c\/strong\u003e rated at 42kW DHW output — engineered to deliver hot water to \u003cstrong\u003etwo to three bathrooms simultaneously\u003c\/strong\u003e without the flow or temperature drop-off typical of a conventional combi. Navien's \u003cstrong\u003eON technology\u003c\/strong\u003e maximises recirculation of domestic hot water around the property's pipework, combining the constant, on-demand flow of a system boiler with the space-saving convenience of a combi — removing the need for a hot water cylinder even in larger homes.\u003c\/p\u003e\n\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:0 0 20px 0;\"\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background-color:#f2f9f8; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e42kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; color:#555;\"\u003eDHW Output\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background-color:#f2f9f8; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e94%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; color:#555;\"\u003eErP Efficiency (A)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background-color:#f2f9f8; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e17.2 l\/min\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; color:#555;\"\u003eDHW Flow (ΔT35°C)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background-color:#f2f9f8; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e12:1\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; color:#555;\"\u003eTurndown Ratio\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background-color:#f2f9f8; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e12 yrs\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; color:#555;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background-color:#f2f9f8; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e43kg\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; color:#555;\"\u003eLift Weight\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background-color:#fdecec; border-left:4px solid #c0392b; border-radius:4px; padding:14px 16px; margin:0 0 16px 0;\"\u003e\n    \u003cdiv style=\"font-weight:700; color:#c0392b; margin-bottom:4px;\"\u003eGas Safe Registration Required\u003c\/div\u003e\n    \u003cdiv style=\"color:#444;\"\u003eInstallation, commissioning and servicing of this boiler must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. A Benchmark commissioning checklist must be completed and left with the end user, and the flue must be positioned in accordance with the clearances set out in the manufacturer's installation and operation manual.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background-color:#fff6e6; border-left:4px solid #e0a800; border-radius:4px; padding:14px 16px; margin:0 0 24px 0;\"\u003e\n    \u003cdiv style=\"font-weight:700; color:#8a6100; margin-bottom:4px;\"\u003eLPG Conversion \u0026amp; Sizing\u003c\/div\u003e\n    \u003cdiv style=\"color:#444;\"\u003eThe boiler is shipped ready to fire on natural gas, with an \u003cstrong\u003eLPG conversion kit included\u003c\/strong\u003e in the packaging for field conversion by a suitably qualified Gas Safe engineer. Confirm mains water flow rate and pressure are sufficient to make full use of its 17.2 l\/min hot water delivery before ordering.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"font-weight:700; font-size:20px; color:#1a1a1a; margin:0 0 14px 0;\"\u003eWhy This Boiler\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:0 0 28px 0;\"\u003e\n\n    \u003cdiv style=\"flex:1; min-width:260px; background-color:#fff; border:1px solid #e0e0e0; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNavien ON Recirculation Technology\u003c\/div\u003e\n      \u003cdiv style=\"color:#444;\"\u003eBuilt-in \u003cstrong\u003eDHW recirculation\u003c\/strong\u003e keeps hot water primed at outlets around the property, removing the wait and the fluctuation between hot and cold that affects conventional combi boilers under heavy simultaneous demand.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1; min-width:260px; background-color:#fff; border:1px solid #e0e0e0; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eASME-Certified Stainless Steel Heat Exchangers\u003c\/div\u003e\n      \u003cdiv style=\"color:#444;\"\u003eDual \u003cstrong\u003eASME-certified stainless steel heat exchangers\u003c\/strong\u003e deliver optimum durability and long-term efficiency, resisting the corrosion that shortens the life of standard combi heat exchangers.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1; min-width:260px; background-color:#fff; border:1px solid #e0e0e0; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eIndustry-Leading 12:1 Turndown\u003c\/div\u003e\n      \u003cdiv style=\"color:#444;\"\u003eA \u003cstrong\u003e12:1 modulation ratio\u003c\/strong\u003e allows the burner to idle at a very low minimum output, improving part-load efficiency and comfort across a wide range of demand.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1; min-width:260px; background-color:#fff; border:1px solid #e0e0e0; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eNaviCirc™ Hot Water Return\u003c\/div\u003e\n      \u003cdiv style=\"color:#444;\"\u003e\n\u003cstrong\u003eNaviCirc™\u003c\/strong\u003e simplifies the setup of a hot water return system using existing pipework, supporting fast, consistent delivery to outlets throughout the property via the boiler's built-in recirculation pump.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1; min-width:260px; background-color:#fff; border:1px solid #e0e0e0; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eHydrogen-Ready (20% Blend)\u003c\/div\u003e\n      \u003cdiv style=\"color:#444;\"\u003eTested and approved for use with up to a \u003cstrong\u003e20% hydrogen blend\u003c\/strong\u003e in the gas supply, helping future-proof the installation against the UK's net zero transition.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1; min-width:260px; background-color:#fff; border:1px solid #e0e0e0; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003e12-Year Warranty\u003c\/div\u003e\n      \u003cdiv style=\"color:#444;\"\u003eNavien back the NCB700 ON with a \u003cstrong\u003e12-year parts and labour warranty\u003c\/strong\u003e as standard — the longest in the current Navien gas range.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"font-weight:700; font-size:20px; color:#1a1a1a; margin:0 0 14px 0;\"\u003eTechnical Specification\u003c\/div\u003e\n\n  \u003cdiv style=\"border:1px solid #e0e0e0; border-radius:6px; overflow:hidden; margin:0 0 28px 0;\"\u003e\n\n    \u003cdiv style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:10px 14px;\"\u003eGeneral\u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eArticle number\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003ePNCB7000042L001 (NCB700-2S+\/42K)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eBoiler type\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003eWall-hung, room-sealed, fan-assisted condensing \u003cstrong\u003eCombi Crossover\u003c\/strong\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eFuel type\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003eNatural gas (LPG conversion kit included, field conversion required)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eDimensions (W x D x H)\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e440 x 335 x 695 mm\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eGuarantee\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e\n\u003cstrong\u003e12 years\u003c\/strong\u003e parts and labour\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eShower rating\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003eTwo to three showers\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:10px 14px;\"\u003eHeating Performance\u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eHeat output range (80\/60°C)\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e3.4 – 34.0 kW\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eModulation (max\/min)\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e\u003cstrong\u003e12:1\u003c\/strong\u003e\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:10px 14px;\"\u003eDomestic Hot Water\u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eDHW output range\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e3.5 – 42.0 kW\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eDHW flow rate (ΔT = 25°C)\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e24.1 l\/min\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eDHW flow rate (ΔT = 35°C)\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e17.2 l\/min\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eDHW flow rate, kitchen tap (ΔT = 45°C)\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e13.4 l\/min\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:10px 14px;\"\u003ePerformance \u0026amp; Emissions\u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eErP efficiency\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e\n\u003cstrong\u003eA (94%)\u003c\/strong\u003e — A+ (98%) with single Smart Plus control\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eNOx classification\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003eClass 6\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eLift weight\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e43 kg\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:10px 14px;\"\u003eFlue\u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eFlue diameter\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003eCoaxial 60\/100mm\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#f7f7f7;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eMax. horizontal coaxial flue length\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e20 m\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"display:flex; padding:10px 14px; background-color:#fff;\"\u003e\n      \u003cdiv style=\"flex:1; color:#555;\"\u003eMax. vertical coaxial flue length\u003c\/div\u003e\n      \u003cdiv style=\"flex:1; color:#1a1a1a;\"\u003e21 m\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"font-weight:700; font-size:20px; color:#1a1a1a; margin:0 0 14px 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdetails style=\"border:1px solid #e0e0e0; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\n    \u003csummary style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eWhat does ON technology actually do?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px; background-color:#fff; color:#444;\"\u003eIt maximises recirculation of domestic hot water around the property's pipework, so hot water is already primed at outlets rather than needing to travel the full length of pipe from the boiler on every draw-off — reducing water wastage and the wait for hot water.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #e0e0e0; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\n    \u003csummary style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eCan this 42kW model really run two or three bathrooms?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px; background-color:#fff; color:#444;\"\u003eYes — the NCB700 ON range was designed specifically for large-property hot water demand. The 42kW model delivers 17.2 l\/min at a 35°C temperature rise, comfortably covering two bathrooms with strong simultaneous performance; for guaranteed three-bathroom, high-flow demand the larger 54kW NCB700-3S\/54K model is available.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #e0e0e0; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\n    \u003csummary style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eDo I still need a hot water cylinder with this boiler?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px; background-color:#fff; color:#444;\"\u003eNo. As a Combi Crossover model, the NCB700 ON supplies domestic hot water directly, without needing a separate storage cylinder, despite its system-boiler-level performance.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #e0e0e0; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\n    \u003csummary style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eCan I run this boiler on LPG?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px; background-color:#fff; color:#444;\"\u003eAn LPG conversion kit is included in the boiler's packaging as standard, but the boiler ships configured for natural gas. Conversion must be carried out by a Gas Safe registered engineer holding the appropriate LPG qualification.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #e0e0e0; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\n    \u003csummary style=\"background-color:#008377CF; color:#fff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eCan I install this boiler myself?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px; background-color:#fff; color:#444;\"\u003eNo. UK law requires that all gas boiler installation, commissioning and servicing work is carried out by a Gas Safe registered engineer.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":66023386349917,"sku":"PNCB7000042L001","price":1895.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienCombiBoilerSide.jpg?v=1783090844"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/collections\/how_lpg_boilers_work.png?v=1784206618","url":"https:\/\/qualityheating.co.uk\/collections\/lpg-boilers-lpg-water-heaters.oembed?page=2","provider":"AIZO Quality Heating","version":"1.0","type":"link"}